Faster access than browser!
240 relations: Active SETI, Addison-Wesley, Allen Telescope Array, Animal cognition, Apsis, Archean, Associated Press, Asthenosphere, Astrobiology, Astronomical unit, Astronomy, Atmospheric escape, Atmospheric pressure, Bar (unit), BBC News, Bernard M. Oliver, Billion years, Biogeochemical cycle, Biosphere, BNO News, Bond albedo, Brown dwarf, Carbon cycle, Carbonate–silicate cycle, Celsius, Centaurus, Centre de données astronomiques de Strasbourg, Ceres (dwarf planet), Christopher McKay, Circumstellar habitable zone, CNET, Colligative properties, Copernican principle, Cosmic Call, Cryomyces antarcticus, Cryomyces minteri, Cryptobiosis, Desert planet, Donald E. Brownlee, Drake equation, Earth, Earth analog, Earth Similarity Index, Enceladus, Eukaryote, Europa (moon), European Geosciences Union, Evolving the Alien, Exomoon, Exoplanet, ..., Extraterrestrial intelligence, Extraterrestrial life, Extraterrestrial liquid water, ExtremeTech, F-type main-sequence star, Fairy tale, Frost line (astrophysics), G-type main-sequence star, Galactic Center, Galactic habitable zone, Ganymede (moon), Gas giant, Gliese 1214 b, Gliese 163, Gliese 163 c, Gliese 581c, Gliese 581g, Gliese 667, Gliese 667 Cc, Gliese 876, Gliese 876 b, Gliese 876 c, Goldilocks and the Three Bears, Goldilocks principle, Greenhouse effect, Guillermo Gonzalez (astronomer), Habitability of natural satellites, Harlow Shapley, HD 28185 b, HD 40307, HD 40307 g, HD 69830, HD 69830 d, HD 85512 b, Hellas Planitia, Hello from Earth, Hill sphere, Horizontal branch, Hubertus Strughold, Human, Hydrate, Hydrogen, Hydrosphere, Hydroxy group, Hyperthermophile, Hypothetical types of biochemistry, Ian Stewart (mathematician), Inverse-square law, Io (moon), Isaac Asimov, Isaac Newton, Jack Cohen (scientist), James Kasting, Jet Propulsion Laboratory, Jill Tarter, Journal of Zoology, Jupiter, K-type main-sequence star, K2-155d, K2-3, K2-3d, Kapteyn b, Kapteyn's Star, Kepler (spacecraft), Kepler-186f, Kepler-22b, Kepler-296e, Kepler-296f, Kepler-438b, Kepler-440b, Kepler-442b, Kepler-452, Kepler-452b, Kepler-62, Kepler-62e, Kepler-62f, Kepler-69, Kepler-69c, LHS 1140, Light-year, List of microorganisms tested in outer space, List of nearest terrestrial exoplanet candidates, Lithosphere, Los Angeles Times, Luyten b, Luyten's Star, Main sequence, Margaret Turnbull, Mars, Mediocrity principle, Metallicity, Methane, Methods of detecting exoplanets, Milky Way, Milnesium tardigradum, Mineralization (geology), Monthly Notices of the Royal Astronomical Society, Moon, Multicellular organism, NASA, Nature (journal), New Scientist, O-type star, Ocean, Ocean planet, Orbital eccentricity, Orbital period, Origin of water on Earth, Outgassing, Parsec, Peter Ward (paleontologist), Philosophiæ Naturalis Principia Mathematica, Photodissociation, Photoevaporation, Photosynthesis, Planetary habitability, Planetary surface, Planetary system, Proceedings of the National Academy of Sciences of the United States of America, Project Phoenix (SETI), Proxima Centauri b, Radiant energy, Radioactive decay, RAND Corporation, Rare Earth hypothesis, Red dwarf, Red giant, Reviews of Geophysics, Rhizocarpon geographicum, Riftia pachyptila, Rogue planet, Ross 128 b, Runaway greenhouse effect, Sampling bias, Saturn, Science (journal), Science Daily, Season, Seasonal flows on warm Martian slopes, Seawater, Sidereal time, Solar analog, Solar flare, Solar luminosity, Solar System, Solar wind, Solution, Solvent, Space colonization, Space habitat, Space suit, Space.com, Spectral line, Star, Star system, Star Trek, Star Trek planet classification, Starspot, Stellar classification, Su-Shu Huang, Sun, Super-Earth, Tardigrade, Tau Ceti, Teen Age Message, Terrestrial planet, The Astrophysical Journal, The Guardian, The New York Times, Tidal heating, Tidal locking, Titan (moon), TRAPPIST-1, Ultraviolet, University of Puerto Rico at Arecibo, University of Washington, Upsilon Andromedae d, W. M. Keck Observatory, Water, Water distribution on Earth, Water hole (radio), White dwarf, Wired (magazine), Xanthoria elegans, Zoltán Balog (astronomer), 16 Cygni Bb, 47 Ursae Majoris, 55 Cancri, 55 Cancri f, 70 Virginis b. Expand index (190 more) »
Active SETI
Active SETI (Active Search for Extra-Terrestrial Intelligence) is the attempt to send messages to intelligent extraterrestrial life.
New!!: Circumstellar habitable zone and Active SETI · See more »
Addison-Wesley
Addison-Wesley is a publisher of textbooks and computer literature.
New!!: Circumstellar habitable zone and Addison-Wesley · See more »
Allen Telescope Array
The Allen Telescope Array (ATA), formerly known as the One Hectare Telescope (1hT), is a radio telescope array dedicated to astronomical observations and a simultaneous search for extraterrestrial intelligence (SETI).
New!!: Circumstellar habitable zone and Allen Telescope Array · See more »
Animal cognition
Animal cognition describes the mental capacities of non-human animals and the study of those capacities.
New!!: Circumstellar habitable zone and Animal cognition · See more »
Apsis
An apsis (ἁψίς; plural apsides, Greek: ἁψῖδες) is an extreme point in the orbit of an object.
New!!: Circumstellar habitable zone and Apsis · See more »
Archean
The Archean Eon (also spelled Archaean or Archæan) is one of the four geologic eons of Earth history, occurring (4 to 2.5 billion years ago).
New!!: Circumstellar habitable zone and Archean · See more »
Associated Press
The Associated Press (AP) is a U.S.-based not-for-profit news agency headquartered in New York City.
New!!: Circumstellar habitable zone and Associated Press · See more »
Asthenosphere
The asthenosphere (from Greek ἀσθενής asthenḗs 'weak' + "sphere") is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth.
New!!: Circumstellar habitable zone and Asthenosphere · See more »
Astrobiology
Astrobiology is a branch of biology concerned with the origins, early evolution, distribution, and future of life in the universe.
New!!: Circumstellar habitable zone and Astrobiology · See more »
Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
New!!: Circumstellar habitable zone and Astronomical unit · See more »
Astronomy
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
New!!: Circumstellar habitable zone and Astronomy · See more »
Atmospheric escape
Atmospheric escape is the loss of planetary atmospheric gases to outer space.
New!!: Circumstellar habitable zone and Atmospheric escape · See more »
Atmospheric pressure
Atmospheric pressure, sometimes also called barometric pressure, is the pressure within the atmosphere of Earth (or that of another planet).
New!!: Circumstellar habitable zone and Atmospheric pressure · See more »
Bar (unit)
The bar is a metric unit of pressure, but is not approved as part of the International System of Units (SI).
New!!: Circumstellar habitable zone and Bar (unit) · See more »
BBC News
BBC News is an operational business division of the British Broadcasting Corporation (BBC) responsible for the gathering and broadcasting of news and current affairs.
New!!: Circumstellar habitable zone and BBC News · See more »
Bernard M. Oliver
Bernard M. Oliver (May 27, 1916 – November 23, 1995), also known as Barney Oliver, was a scientist who made contributions in many fields, including radar, television, and computers.
New!!: Circumstellar habitable zone and Bernard M. Oliver · See more »
Billion years
A billion years (109 years) is a unit of time on the petasecond scale, more precisely equal to seconds.
New!!: Circumstellar habitable zone and Billion years · See more »
Biogeochemical cycle
In geography and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth.
New!!: Circumstellar habitable zone and Biogeochemical cycle · See more »
Biosphere
The biosphere (from Greek βίος bíos "life" and σφαῖρα sphaira "sphere") also known as the ecosphere (from Greek οἶκος oîkos "environment" and σφαῖρα), is the worldwide sum of all ecosystems.
New!!: Circumstellar habitable zone and Biosphere · See more »
BNO News
BNO News is an international news agency headquartered in Tilburg, the Netherlands.
New!!: Circumstellar habitable zone and BNO News · See more »
Bond albedo
The Bond albedo, named after the American astronomer George Phillips Bond (1825–1865), who originally proposed it, is the fraction of power in the total electromagnetic radiation incident on an astronomical body that is scattered back out into space.
New!!: Circumstellar habitable zone and Bond albedo · See more »
Brown dwarf
Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars, having masses between approximately 13 to 75–80 times that of Jupiter, or approximately to about.
New!!: Circumstellar habitable zone and Brown dwarf · See more »
Carbon cycle
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
New!!: Circumstellar habitable zone and Carbon cycle · See more »
Carbonate–silicate cycle
The carbonate–silicate geochemical cycle describes the transformation of silicate rocks to carbonate rocks by weathering and sedimentation at Earth's surface and the transformation of carbonate rocks back into silicates by metamorphism and magmatism.
New!!: Circumstellar habitable zone and Carbonate–silicate cycle · See more »
Celsius
The Celsius scale, previously known as the centigrade scale, is a temperature scale used by the International System of Units (SI).
New!!: Circumstellar habitable zone and Celsius · See more »
Centaurus
Centaurus is a bright constellation in the southern sky.
New!!: Circumstellar habitable zone and Centaurus · See more »
Centre de données astronomiques de Strasbourg
The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.
New!!: Circumstellar habitable zone and Centre de données astronomiques de Strasbourg · See more »
Ceres (dwarf planet)
Ceres (minor-planet designation: 1 Ceres) is the largest object in the asteroid belt that lies between the orbits of Mars and Jupiter, slightly closer to Mars' orbit.
New!!: Circumstellar habitable zone and Ceres (dwarf planet) · See more »
Christopher McKay
Christopher P. McKay is a planetary scientist at NASA Ames Research Center, studying planetary atmospheres, astrobiology, and terraforming.
New!!: Circumstellar habitable zone and Christopher McKay · See more »
Circumstellar habitable zone
In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure.
New!!: Circumstellar habitable zone and Circumstellar habitable zone · See more »
CNET
CNET (stylized as c|net) is an American media website that publishes reviews, news, articles, blogs, podcasts and videos on technology and consumer electronics globally.
New!!: Circumstellar habitable zone and CNET · See more »
Colligative properties
In chemistry, colligative properties are properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the nature of the chemical species present.
New!!: Circumstellar habitable zone and Colligative properties · See more »
Copernican principle
In physical cosmology, the Copernican principle, is an alternative name of the mediocrity principle, or the principle of relativity, stating that humans (the Earth, or the Solar system) are not privileged observers of the universe.
New!!: Circumstellar habitable zone and Copernican principle · See more »
Cosmic Call
Cosmic Call was the name of two sets of interstellar radio messages that were sent from RT-70 in Yevpatoria, Crimea in 1999 (Cosmic Call 1) and 2003 (Cosmic Call 2) to various nearby stars.
New!!: Circumstellar habitable zone and Cosmic Call · See more »
Cryomyces antarcticus
Cryomyces antarcticus is a fungus of uncertain placement in the class Dothideomycetes, division Ascomycota.
New!!: Circumstellar habitable zone and Cryomyces antarcticus · See more »
Cryomyces minteri
Cryomyces minteri is a fungus of uncertain placement in the class Dothideomycetes, division Ascomycota.
New!!: Circumstellar habitable zone and Cryomyces minteri · See more »
Cryptobiosis
Cryptobiosis is an ametabolic state of life entered by an organism in response to adverse environmental conditions such as desiccation, freezing, and oxygen deficiency.
New!!: Circumstellar habitable zone and Cryptobiosis · See more »
Desert planet
A desert planet or dry planet is a theoretical type of terrestrial planet with a surface consistency similar to Earth's hot deserts.
New!!: Circumstellar habitable zone and Desert planet · See more »
Donald E. Brownlee
Donald Eugene Brownlee (born December 21, 1943) is a professor of astronomy at the University of Washington at Seattle and the principal investigator for NASA's Stardust mission.
New!!: Circumstellar habitable zone and Donald E. Brownlee · See more »
Drake equation
The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy.
New!!: Circumstellar habitable zone and Drake equation · See more »
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
New!!: Circumstellar habitable zone and Earth · See more »
Earth analog
An Earth analog (also referred to as an Earth twin or Earth-like planet, though this latter term may refer to any terrestrial planet) is a planet or moon with environmental conditions similar to those found on Earth.
New!!: Circumstellar habitable zone and Earth analog · See more »
Earth Similarity Index
The Earth Similarity Index (ESI) is a proposed characterization of how similar a planetary-mass object or natural satellite is to Earth.
New!!: Circumstellar habitable zone and Earth Similarity Index · See more »
Enceladus
Enceladus is the sixth-largest moon of Saturn.
New!!: Circumstellar habitable zone and Enceladus · See more »
Eukaryote
Eukaryotes are organisms whose cells have a nucleus enclosed within membranes, unlike Prokaryotes (Bacteria and other Archaea).
New!!: Circumstellar habitable zone and Eukaryote · See more »
Europa (moon)
Europa or as Ευρώπη (Jupiter II) is the smallest of the four Galilean moons orbiting Jupiter, and the sixth-closest to the planet.
New!!: Circumstellar habitable zone and Europa (moon) · See more »
European Geosciences Union
The European Geosciences Union (EGU) is a non-profit international union in the fields of Earth, planetary, and space sciences.
New!!: Circumstellar habitable zone and European Geosciences Union · See more »
Evolving the Alien
Evolving the Alien: The Science of Extraterrestrial Life (published in the US, and UK second edition as What Does a Martian Look Like?: The Science of Extraterrestrial Life) is a 2002 popular science book about xenobiology by biologist Jack Cohen and mathematician Ian Stewart.
New!!: Circumstellar habitable zone and Evolving the Alien · See more »
Exomoon
An exomoon or extrasolar moon is a natural satellite that orbits an exoplanet or other non-stellar extrasolar body.
New!!: Circumstellar habitable zone and Exomoon · See more »
Exoplanet
An exoplanet or extrasolar planet is a planet outside our solar system.
New!!: Circumstellar habitable zone and Exoplanet · See more »
Extraterrestrial intelligence
Extraterrestrial intelligence (often abbreviated ETI) refers to hypothetical intelligent extraterrestrial life.
New!!: Circumstellar habitable zone and Extraterrestrial intelligence · See more »
Extraterrestrial life
Extraterrestrial life,Where "extraterrestrial" is derived from the Latin extra ("beyond", "not of") and terrestris ("of Earth", "belonging to Earth").
New!!: Circumstellar habitable zone and Extraterrestrial life · See more »
Extraterrestrial liquid water
Extraterrestrial liquid water (from the Latin words: extra and terrestris) is water in its liquid state that naturally occurs outside Earth.
New!!: Circumstellar habitable zone and Extraterrestrial liquid water · See more »
ExtremeTech
ExtremeTech is a technology weblog about hardware, computer software, science and other technologies which launched in May 2001.
New!!: Circumstellar habitable zone and ExtremeTech · See more »
F-type main-sequence star
An F-type main-sequence star (F V) is a main-sequence, hydrogen-fusing star of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass of the Sun and surface temperatures between 6,000 and 7,600 K.Tables VII and VIII.
New!!: Circumstellar habitable zone and F-type main-sequence star · See more »
Fairy tale
A fairy tale, wonder tale, magic tale, or Märchen is folklore genre that takes the form of a short story that typically features entities such as dwarfs, dragons, elves, fairies, giants, gnomes, goblins, griffins, mermaids, talking animals, trolls, unicorns, or witches, and usually magic or enchantments.
New!!: Circumstellar habitable zone and Fairy tale · See more »
Frost line (astrophysics)
In astronomy or planetary science, the frost line, also known as the snow line or ice line, is the particular distance in the solar nebula from the central protostar where it is cold enough for volatile compounds such as water, ammonia, methane, carbon dioxide, carbon monoxide to condense into solid ice grains.
New!!: Circumstellar habitable zone and Frost line (astrophysics) · See more »
G-type main-sequence star
A G-type main-sequence star (Spectral type: G-V), often (and imprecisely) called a yellow dwarf, or G dwarf star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.84 to 1.15 solar masses and surface temperature of between 5,300 and 6,000 K., G. M. H. J. Habets and J. R. W. Heintze, Astronomy and Astrophysics Supplement 46 (November 1981), pp.
New!!: Circumstellar habitable zone and G-type main-sequence star · See more »
Galactic Center
The Galactic Center is the rotational center of the Milky Way.
New!!: Circumstellar habitable zone and Galactic Center · See more »
Galactic habitable zone
In astrobiology and planetary astrophysics, the galactic habitable zone is the region of a galaxy in which life might most likely develop.
New!!: Circumstellar habitable zone and Galactic habitable zone · See more »
Ganymede (moon)
Ganymede (Jupiter III) is the largest and most massive moon of Jupiter and in the Solar System.
New!!: Circumstellar habitable zone and Ganymede (moon) · See more »
Gas giant
A gas giant is a giant planet composed mainly of hydrogen and helium.
New!!: Circumstellar habitable zone and Gas giant · See more »
Gliese 1214 b
Gliese 1214 b (often shortened to GJ 1214 b) is an exoplanet that orbits the star Gliese 1214, and was discovered in December 2009.
New!!: Circumstellar habitable zone and Gliese 1214 b · See more »
Gliese 163
Gliese 163 is an M3.5V red dwarf located 49 light years (15.0pc) from the sun, in the constellation Dorado.
New!!: Circumstellar habitable zone and Gliese 163 · See more »
Gliese 163 c
Gliese 163 c or Gl 163 c is said to be a potentially habitable exoplanet, orbiting within the habitable zone of M dwarf star Gliese 163.
New!!: Circumstellar habitable zone and Gliese 163 c · See more »
Gliese 581c
Gliese 581c or Gl 581c is a planet orbiting within the Gliese 581 system.
New!!: Circumstellar habitable zone and Gliese 581c · See more »
Gliese 581g
Gliese 581g, unofficially known as Zarmina (or Zarmina's World), is an unconfirmed (and frequently disputed) exoplanet claimed to orbit within the Gliese 581 system, twenty light-years from Earth.
New!!: Circumstellar habitable zone and Gliese 581g · See more »
Gliese 667
Gliese 667 (142 G. Scorpii) is a triple-star system in the constellation Scorpius lying at a distance of about 6.8 pc (23.6 ly) from Earth.
New!!: Circumstellar habitable zone and Gliese 667 · See more »
Gliese 667 Cc
Gliese 667 Cc (also known as GJ 667Cc, HR 6426Cc, or HD 156384Cc) is an exoplanet orbiting within the habitable zone of the red dwarf star Gliese 667 C, which is a member of the Gliese 667 triple star system, approximately 23.62 light-years (6.8 parsecs, or about 217,000,000,000,000 km) away in the constellation of Scorpius.
New!!: Circumstellar habitable zone and Gliese 667 Cc · See more »
Gliese 876
Gliese 876 is a red dwarf approximately 15 light-years away from Earth in the constellation of Aquarius.
New!!: Circumstellar habitable zone and Gliese 876 · See more »
Gliese 876 b
Gliese 876 b is an exoplanet orbiting the red dwarf Gliese 876.
New!!: Circumstellar habitable zone and Gliese 876 b · See more »
Gliese 876 c
Gliese 876 c is an exoplanet orbiting the red dwarf Gliese 876, taking about 30 days to complete an orbit.
New!!: Circumstellar habitable zone and Gliese 876 c · See more »
Goldilocks and the Three Bears
"Goldilocks and the Three Bears" (originally titled "The Story of the Three Bears") is a 19th-century fairy tale of which three versions exist.
New!!: Circumstellar habitable zone and Goldilocks and the Three Bears · See more »
Goldilocks principle
The Goldilocks principle is named by analogy to the children's story The Three Bears, in which a little girl named Goldilocks tastes three different bowls of porridge, and she finds that she prefers porridge which is neither too hot nor too cold, but has just the right temperature.
New!!: Circumstellar habitable zone and Goldilocks principle · See more »
Greenhouse effect
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere.
New!!: Circumstellar habitable zone and Greenhouse effect · See more »
Guillermo Gonzalez (astronomer)
Guillermo Gonzalez (born 1963 in Havana, Cuba) is an astrophysicist, proponent of the pseudoscientific principle of intelligent design, and an assistant professor at Ball State University, a public research university, in Muncie, Indiana.
New!!: Circumstellar habitable zone and Guillermo Gonzalez (astronomer) · See more »
Habitability of natural satellites
The habitability of natural satellites is a measure of the potential of natural satellites to have environments hospitable to life.
New!!: Circumstellar habitable zone and Habitability of natural satellites · See more »
Harlow Shapley
Harlow Shapley (November 2, 1885 – October 20, 1972) was a 20th-century American scientist, head of the Harvard College Observatory (1921–1952), and political activist during the latter New Deal and Fair Deal.
New!!: Circumstellar habitable zone and Harlow Shapley · See more »
HD 28185 b
HD 28185 b is an extrasolar planet approximately 138 light-years away from Earth in the constellation of Eridanus.
New!!: Circumstellar habitable zone and HD 28185 b · See more »
HD 40307
HD 40307 is an orange (K-type) main-sequence star located approximately 42 light-years away in the constellation of Pictor (the Easel), taking its primary name from its Henry Draper Catalogue designation.
New!!: Circumstellar habitable zone and HD 40307 · See more »
HD 40307 g
HD 40307 g is an exoplanet orbiting in the habitable zone of HD 40307.
New!!: Circumstellar habitable zone and HD 40307 g · See more »
HD 69830
HD 69830 (285 G. Puppis) is a yellow dwarf star located approximately 41 light-years away in the constellation of Puppis.
New!!: Circumstellar habitable zone and HD 69830 · See more »
HD 69830 d
HD 69830 d is an exoplanet likely orbiting within the habitable zone of the star HD 69830, the outermost of three such planets discovered in the system.
New!!: Circumstellar habitable zone and HD 69830 d · See more »
HD 85512 b
HD 85512 b is an exoplanet orbiting HD 85512, a K-type main-sequence star approximately 36 light-years from Earth in the constellation of Vela.
New!!: Circumstellar habitable zone and HD 85512 b · See more »
Hellas Planitia
Hellas Planitia is a plain located within the huge, roughly circular impact basin Hellas located in the southern hemisphere of the planet Mars.
New!!: Circumstellar habitable zone and Hellas Planitia · See more »
Hello from Earth
Hello From Earth (HFE) is an Interstellar Radio Message (IRM).
New!!: Circumstellar habitable zone and Hello from Earth · See more »
Hill sphere
An astronomical body's Hill sphere is the region in which it dominates the attraction of satellites.
New!!: Circumstellar habitable zone and Hill sphere · See more »
Horizontal branch
The horizontal branch (HB) is a stage of stellar evolution that immediately follows the red giant branch in stars whose masses are similar to the Sun's.
New!!: Circumstellar habitable zone and Horizontal branch · See more »
Hubertus Strughold
Dr.
New!!: Circumstellar habitable zone and Hubertus Strughold · See more »
Human
Humans (taxonomically Homo sapiens) are the only extant members of the subtribe Hominina.
New!!: Circumstellar habitable zone and Human · See more »
Hydrate
In chemistry, a hydrate is a substance that contains water or its constituent elements.
New!!: Circumstellar habitable zone and Hydrate · See more »
Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
New!!: Circumstellar habitable zone and Hydrogen · See more »
Hydrosphere
The hydrosphere (from Greek ὕδωρ hydōr, "water" and σφαῖρα sphaira, "sphere") is the combined mass of water found on, under, and above the surface of a planet, minor planet or natural satellite.
New!!: Circumstellar habitable zone and Hydrosphere · See more »
Hydroxy group
A hydroxy or hydroxyl group is the entity with the formula OH.
New!!: Circumstellar habitable zone and Hydroxy group · See more »
Hyperthermophile
A hyperthermophile is an organism that thrives in extremely hot environments—from 60 °C (140 °F) upwards.
New!!: Circumstellar habitable zone and Hyperthermophile · See more »
Hypothetical types of biochemistry
Hypothetical types of biochemistry are forms of biochemistry speculated to be scientifically viable but not proven to exist at this time.
New!!: Circumstellar habitable zone and Hypothetical types of biochemistry · See more »
Ian Stewart (mathematician)
Ian Nicholas Stewart (born 24 September 1945) is a British mathematician and a popular-science and science-fiction writer.
New!!: Circumstellar habitable zone and Ian Stewart (mathematician) · See more »
Inverse-square law
The inverse-square law, in physics, is any physical law stating that a specified physical quantity or intensity is inversely proportional to the square of the distance from the source of that physical quantity.
New!!: Circumstellar habitable zone and Inverse-square law · See more »
Io (moon)
Io (Jupiter I) is the innermost of the four Galilean moons of the planet Jupiter.
New!!: Circumstellar habitable zone and Io (moon) · See more »
Isaac Asimov
Isaac Asimov (January 2, 1920 – April 6, 1992) was an American writer and professor of biochemistry at Boston University.
New!!: Circumstellar habitable zone and Isaac Asimov · See more »
Isaac Newton
Sir Isaac Newton (25 December 1642 – 20 March 1726/27) was an English mathematician, astronomer, theologian, author and physicist (described in his own day as a "natural philosopher") who is widely recognised as one of the most influential scientists of all time, and a key figure in the scientific revolution.
New!!: Circumstellar habitable zone and Isaac Newton · See more »
Jack Cohen (scientist)
Jack Cohen, FRSB (born 19 September 1933 in Norwich, United Kingdom) is a British reproductive biologist also known for his science books and involvement with science fiction.
New!!: Circumstellar habitable zone and Jack Cohen (scientist) · See more »
James Kasting
James Fraser Kasting (born January 2, 1953) is an American geoscientist and Distinguished Professor of Geosciences at Penn State University.
New!!: Circumstellar habitable zone and James Kasting · See more »
Jet Propulsion Laboratory
The Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center in Pasadena, California, United States, with large portions of the campus in La Cañada Flintridge, California.
New!!: Circumstellar habitable zone and Jet Propulsion Laboratory · See more »
Jill Tarter
Jill Cornell Tarter (born January 16, 1944) is an American astronomer best known for her work on the search for extraterrestrial intelligence (SETI).
New!!: Circumstellar habitable zone and Jill Tarter · See more »
Journal of Zoology
The Journal of Zoology is a scientific journal concerning zoology, the study of animals.
New!!: Circumstellar habitable zone and Journal of Zoology · See more »
Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
New!!: Circumstellar habitable zone and Jupiter · See more »
K-type main-sequence star
A K-type main-sequence star (K V), also referred to as an orange dwarf or K dwarf, is a main-sequence (hydrogen-burning) star of spectral type K and luminosity class V. These stars are intermediate in size between red M-type main-sequence stars ("red dwarfs") and yellow G-type main-sequence stars.
New!!: Circumstellar habitable zone and K-type main-sequence star · See more »
K2-155d
K2-155d is a potentially habitable Super-Earth exoplanet in the K2-155 system.
New!!: Circumstellar habitable zone and K2-155d · See more »
K2-3
K2-3, also known as EPIC 201367065, is a red dwarf with three known planets.
New!!: Circumstellar habitable zone and K2-3 · See more »
K2-3d
K2-3d, also known as EPIC 201367065 d, is a confirmed massive solid exoplanet orbiting the red dwarf star K2-3, and the outermost of three such planets discovered in the system.
New!!: Circumstellar habitable zone and K2-3d · See more »
Kapteyn b
Kapteyn b is a possible exoplanet that orbits within the habitable zone of the red subdwarf Kapteyn's star, located approximately from Earth.
New!!: Circumstellar habitable zone and Kapteyn b · See more »
Kapteyn's Star
Kapteyn's Star is a class M1 red subdwarf about 12.76 light years from Earth in the southern constellation Pictor; it is the closest halo star to the Solar System.
New!!: Circumstellar habitable zone and Kapteyn's Star · See more »
Kepler (spacecraft)
Kepler is a space observatory launched by NASA to discover Earth-size planets orbiting other stars.
New!!: Circumstellar habitable zone and Kepler (spacecraft) · See more »
Kepler-186f
Kepler-186f (also known by its Kepler Object of Interest designation KOI-571.05) is an exoplanet orbiting the red dwarf Kepler-186, about 550 light-years (171 parsecs, or nearly km) from the Earth.
New!!: Circumstellar habitable zone and Kepler-186f · See more »
Kepler-22b
Kepler-22b, also known by its Kepler object of interest designation KOI-087.01, is an extrasolar planet orbiting within the empirical habitable zone of the Sun-like star Kepler-22.
New!!: Circumstellar habitable zone and Kepler-22b · See more »
Kepler-296e
Kepler-296e (also known by its Kepler Object of Interest designation KOI-1422.05) is a confirmed Earth-sized exoplanet orbiting within the habitable zone of Kepler-296.
New!!: Circumstellar habitable zone and Kepler-296e · See more »
Kepler-296f
Kepler-296f (also known by its Kepler Object of Interest designation KOI-1422.04) is a confirmed super-Earth exoplanet orbiting within the habitable zone of Kepler-296.
New!!: Circumstellar habitable zone and Kepler-296f · See more »
Kepler-438b
Kepler-438b (also known by its Kepler Object of Interest designation KOI-3284.01) is a confirmed near-Earth-sized exoplanet, likely rocky, orbiting on the inner edge of the habitable zone of the red dwarf as it receives 1.4 times our solar flux.
New!!: Circumstellar habitable zone and Kepler-438b · See more »
Kepler-440b
Kepler-440b (also known by its Kepler Object of Interest designation KOI-4087.01) is a confirmed super-Earth exoplanet orbiting within the habitable zone of Kepler-440, about from Earth.
New!!: Circumstellar habitable zone and Kepler-440b · See more »
Kepler-442b
Kepler-442b (also known by its Kepler Object of Interest designation KOI-4742.01) is a confirmed near-Earth-sized exoplanet, likely rocky, orbiting within the habitable zone of the K-type main-sequence star Kepler-442, about 1,120 light-years (342 parsecs, or nearly km) from Earth in the constellation Lyra.
New!!: Circumstellar habitable zone and Kepler-442b · See more »
Kepler-452
Kepler-452 is a G-type main-sequence star located about 1400 light-years away from Earth in the constellation of Cygnus.
New!!: Circumstellar habitable zone and Kepler-452 · See more »
Kepler-452b
Kepler-452b (sometimes nicknamed Earth 2.0 or Earth's Cousin based on its characteristics; known sometimes as Coruscant by NASA, also known by its Kepler Object of Interest designation KOI-7016.01) is an exoplanet orbiting the Sun-like star Kepler-452 about from Earth in the constellation Cygnus.
New!!: Circumstellar habitable zone and Kepler-452b · See more »
Kepler-62
(Aladin interactive image) --> Kepler-62 is a star somewhat cooler and smaller than the Sun in the constellation Lyra, 990 light years from Earth.
New!!: Circumstellar habitable zone and Kepler-62 · See more »
Kepler-62e
Kepler-62e (also known by its Kepler Object of Interest designation KOI-701.03) is a super-Earth exoplanet (extrasolar planet) discovered orbiting within the habitable zone of Kepler-62, the second outermost of five such planets discovered by NASA's Kepler spacecraft.
New!!: Circumstellar habitable zone and Kepler-62e · See more »
Kepler-62f
Kepler-62f (also known by its Kepler Object of Interest designation KOI-701.04) is a super-Earth exoplanet orbiting within the habitable zone of the star Kepler-62, the outermost of five such planets discovered around the star by NASA's ''Kepler'' spacecraft.
New!!: Circumstellar habitable zone and Kepler-62f · See more »
Kepler-69
Kepler-69 (KOI-172, 2MASS J19330262+4452080) is a G-type main-sequence star similar to the Sun in the constellation Cygnus, located about from Earth.
New!!: Circumstellar habitable zone and Kepler-69 · See more »
Kepler-69c
Kepler-69c (also known by its Kepler Object of Interest designation KOI-172.02) is a confirmed super-Earth extrasolar planet, likely rocky, orbiting the Sun-like star Kepler-69, the outermost of two such planets discovered by NASA's Kepler spacecraft.
New!!: Circumstellar habitable zone and Kepler-69c · See more »
LHS 1140
LHS 1140 is a red dwarf in the constellation of Cetus.
New!!: Circumstellar habitable zone and LHS 1140 · See more »
Light-year
The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.
New!!: Circumstellar habitable zone and Light-year · See more »
List of microorganisms tested in outer space
The survival of some microorganisms exposed to outer space has been studied using both simulated facilities and low Earth orbit exposures.
New!!: Circumstellar habitable zone and List of microorganisms tested in outer space · See more »
List of nearest terrestrial exoplanet candidates
This list of nearest space terrestrial exoplanets candidates contains possible terrestrial ("rocky") exoplanets spaced at a distance of up to 50 light-years from the Solar System, ordered by increasing distance.
New!!: Circumstellar habitable zone and List of nearest terrestrial exoplanet candidates · See more »
Lithosphere
A lithosphere (λίθος for "rocky", and σφαίρα for "sphere") is the rigid, outermost shell of a terrestrial-type planet, or natural satellite, that is defined by its rigid mechanical properties.
New!!: Circumstellar habitable zone and Lithosphere · See more »
Los Angeles Times
The Los Angeles Times is a daily newspaper which has been published in Los Angeles, California since 1881.
New!!: Circumstellar habitable zone and Los Angeles Times · See more »
Luyten b
Luyten b (more commonly known as GJ 273b) is a confirmed exoplanet, likely rocky, orbiting within the habitable zone of the nearby red dwarf Luyten's Star.
New!!: Circumstellar habitable zone and Luyten b · See more »
Luyten's Star
Luyten's Star (GJ 273) is a red dwarf in the constellation Canis Minor located at a distance of approximately from the Sun.
New!!: Circumstellar habitable zone and Luyten's Star · See more »
Main sequence
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
New!!: Circumstellar habitable zone and Main sequence · See more »
Margaret Turnbull
Margaret Carol Turnbull is an American astronomer.
New!!: Circumstellar habitable zone and Margaret Turnbull · See more »
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
New!!: Circumstellar habitable zone and Mars · See more »
Mediocrity principle
The mediocrity principle is the philosophical notion that "if an item is drawn at random from one of several sets or categories, it's likelier to come from the most numerous category than from any one of the less numerous categories".
New!!: Circumstellar habitable zone and Mediocrity principle · See more »
Metallicity
In astronomy, metallicity is used to describe the abundance of elements present in an object that are heavier than hydrogen or helium.
New!!: Circumstellar habitable zone and Metallicity · See more »
Methane
Methane is a chemical compound with the chemical formula (one atom of carbon and four atoms of hydrogen).
New!!: Circumstellar habitable zone and Methane · See more »
Methods of detecting exoplanets
Any planet is an extremely faint light source compared to its parent star.
New!!: Circumstellar habitable zone and Methods of detecting exoplanets · See more »
Milky Way
The Milky Way is the galaxy that contains our Solar System.
New!!: Circumstellar habitable zone and Milky Way · See more »
Milnesium tardigradum
Milnesium tardigradum is a cosmopolitan species of tardigrades that can be found in a diverse range of environments.
New!!: Circumstellar habitable zone and Milnesium tardigradum · See more »
Mineralization (geology)
In geology, mineralization is the deposition of economically important metals in the formation of ore bodies or "lodes" by various process.
New!!: Circumstellar habitable zone and Mineralization (geology) · See more »
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
New!!: Circumstellar habitable zone and Monthly Notices of the Royal Astronomical Society · See more »
Moon
The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.
New!!: Circumstellar habitable zone and Moon · See more »
Multicellular organism
Multicellular organisms are organisms that consist of more than one cell, in contrast to unicellular organisms.
New!!: Circumstellar habitable zone and Multicellular organism · See more »
NASA
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
New!!: Circumstellar habitable zone and NASA · See more »
Nature (journal)
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
New!!: Circumstellar habitable zone and Nature (journal) · See more »
New Scientist
New Scientist, first published on 22 November 1956, is a weekly, English-language magazine that covers all aspects of science and technology.
New!!: Circumstellar habitable zone and New Scientist · See more »
O-type star
An O-type star is a hot, blue-white star of spectral type O in the Yerkes classification system employed by astronomers.
New!!: Circumstellar habitable zone and O-type star · See more »
Ocean
An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere.
New!!: Circumstellar habitable zone and Ocean · See more »
Ocean planet
An ocean planet, ocean world, water world, aquaplanet or panthalassic planet is a type of terrestrial planet that contains a substantial amount of water either at its surface or subsurface.
New!!: Circumstellar habitable zone and Ocean planet · See more »
Orbital eccentricity
The orbital eccentricity of an astronomical object is a parameter that determines the amount by which its orbit around another body deviates from a perfect circle.
New!!: Circumstellar habitable zone and Orbital eccentricity · See more »
Orbital period
The orbital period is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars.
New!!: Circumstellar habitable zone and Orbital period · See more »
Origin of water on Earth
The origin of water on Earth, or the reason that there is clearly more liquid water on Earth than on the other rocky planets of the Solar System, is not completely understood.
New!!: Circumstellar habitable zone and Origin of water on Earth · See more »
Outgassing
Outgassing (sometimes called offgassing, particularly when in reference to indoor air quality) is the release of a gas that was dissolved, trapped, frozen or absorbed in some material.
New!!: Circumstellar habitable zone and Outgassing · See more »
Parsec
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
New!!: Circumstellar habitable zone and Parsec · See more »
Peter Ward (paleontologist)
Peter Douglas Ward (born 1949) is an American paleontologist and professor at the University of Washington, Seattle, and Sprigg Institute of Geobiology at the University of Adelaide.
New!!: Circumstellar habitable zone and Peter Ward (paleontologist) · See more »
Philosophiæ Naturalis Principia Mathematica
Philosophiæ Naturalis Principia Mathematica (Latin for Mathematical Principles of Natural Philosophy), often referred to as simply the Principia, is a work in three books by Isaac Newton, in Latin, first published 5 July 1687.
New!!: Circumstellar habitable zone and Philosophiæ Naturalis Principia Mathematica · See more »
Photodissociation
Photodissociation, photolysis, or photodecomposition is a chemical reaction in which a chemical compound is broken down by photons.
New!!: Circumstellar habitable zone and Photodissociation · See more »
Photoevaporation
Photoevaporation denotes the process where energetic radiation ionises gas and causes it to disperse away from the ionising source.
New!!: Circumstellar habitable zone and Photoevaporation · See more »
Photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities (energy transformation).
New!!: Circumstellar habitable zone and Photosynthesis · See more »
Planetary habitability
Planetary habitability is the measure of a planet's or a natural satellite's potential to have habitable environments hospitable to life, or its ability to generate life endogenously.
New!!: Circumstellar habitable zone and Planetary habitability · See more »
Planetary surface
A planetary surface is where the solid (or liquid) material of the outer crust on certain types of astronomical objects contacts the atmosphere or outer space.
New!!: Circumstellar habitable zone and Planetary surface · See more »
Planetary system
A planetary system is a set of gravitationally bound non-stellar objects in or out of orbit around a star or star system.
New!!: Circumstellar habitable zone and Planetary system · See more »
Proceedings of the National Academy of Sciences of the United States of America
Proceedings of the National Academy of Sciences of the United States of America (PNAS) is the official scientific journal of the National Academy of Sciences, published since 1915.
New!!: Circumstellar habitable zone and Proceedings of the National Academy of Sciences of the United States of America · See more »
Project Phoenix (SETI)
Project Phoenix was a SETI project: in this case a search for extraterrestrial intelligence by analyzing patterns in radio signals.
New!!: Circumstellar habitable zone and Project Phoenix (SETI) · See more »
Proxima Centauri b
Proxima Centauri b (also called Proxima b or Alpha Centauri Cb) is an exoplanet orbiting within the habitable zone of the red dwarf star Proxima Centauri, which is the closest star to the Sun and part of a triple star system.
New!!: Circumstellar habitable zone and Proxima Centauri b · See more »
Radiant energy
In physics, and in particular as measured by radiometry, radiant energy is the energy of electromagnetic and gravitational radiation.
New!!: Circumstellar habitable zone and Radiant energy · See more »
Radioactive decay
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.
New!!: Circumstellar habitable zone and Radioactive decay · See more »
RAND Corporation
RAND Corporation ("Research ANd Development") is an American nonprofit global policy think tank created in 1948 by Douglas Aircraft Company to offer research and analysis to the United States Armed Forces.
New!!: Circumstellar habitable zone and RAND Corporation · See more »
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances.
New!!: Circumstellar habitable zone and Rare Earth hypothesis · See more »
Red dwarf
A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.
New!!: Circumstellar habitable zone and Red dwarf · See more »
Red giant
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.
New!!: Circumstellar habitable zone and Red giant · See more »
Reviews of Geophysics
Reviews of Geophysics is a quarterly peer-reviewed scientific journal published by Wiley-Blackwell on behalf of the American Geophysical Union.
New!!: Circumstellar habitable zone and Reviews of Geophysics · See more »
Rhizocarpon geographicum
Rhizocarpon geographicum (the map lichen) is a species of lichen, which grows on rocks in mountainous areas of low air pollution.
New!!: Circumstellar habitable zone and Rhizocarpon geographicum · See more »
Riftia pachyptila
Riftia pachyptila, commonly known as giant tube worms, are marine invertebrates in the phylum Annelida (formerly grouped in phylum Pogonophora and Vestimentifera) related to tube worms commonly found in the intertidal and pelagic zones.
New!!: Circumstellar habitable zone and Riftia pachyptila · See more »
Rogue planet
A rogue planet (also termed an interstellar planet, nomad planet, free-floating planet, orphan planet, wandering planet, starless planet, or sunless planet) is a planetary-mass object that orbits a galactic center directly.
New!!: Circumstellar habitable zone and Rogue planet · See more »
Ross 128 b
Ross 128 b is a confirmed Earth-sized exoplanet, likely rocky, orbiting within the inner habitable zone of the red dwarf Ross 128, at a distance of about 11 light-years from Earth;.
New!!: Circumstellar habitable zone and Ross 128 b · See more »
Runaway greenhouse effect
A runaway greenhouse effect is a process in which a net positive feedback between surface temperature and atmospheric opacity increases the strength of the greenhouse effect on a planet until its oceans boil away.
New!!: Circumstellar habitable zone and Runaway greenhouse effect · See more »
Sampling bias
In statistics, sampling bias is a bias in which a sample is collected in such a way that some members of the intended population are less likely to be included than others.
New!!: Circumstellar habitable zone and Sampling bias · See more »
Saturn
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
New!!: Circumstellar habitable zone and Saturn · See more »
Science (journal)
Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.
New!!: Circumstellar habitable zone and Science (journal) · See more »
Science Daily
Science Daily is an American website that aggregates press releases and publishes lightly edited press releases (a practice called churnalism) about science, similar to Phys.org and EurekAlert!.
New!!: Circumstellar habitable zone and Science Daily · See more »
Season
A season is a division of the year marked by changes in weather, ecology, and amount of daylight.
New!!: Circumstellar habitable zone and Season · See more »
Seasonal flows on warm Martian slopes
Seasonal flows on warm Martian slopes (also called recurring slope lineae, recurrent slope lineae and RSL) are thought to be salty water flows occurring during the warmest months on Mars, or alternatively, dry grains that "flow" downslope of at least 27 degrees.
New!!: Circumstellar habitable zone and Seasonal flows on warm Martian slopes · See more »
Seawater
Seawater, or salt water, is water from a sea or ocean.
New!!: Circumstellar habitable zone and Seawater · See more »
Sidereal time
Sidereal time is a timekeeping system that astronomers use to locate celestial objects.
New!!: Circumstellar habitable zone and Sidereal time · See more »
Solar analog
Solar-type star, solar analogs (also analogues), and solar twins are stars that are particularly similar to the Sun.
New!!: Circumstellar habitable zone and Solar analog · See more »
Solar flare
A solar flare is a sudden flash of increased Sun's brightness, usually observed near its surface.
New!!: Circumstellar habitable zone and Solar flare · See more »
Solar luminosity
The solar luminosity,, is a unit of radiant flux (power emitted in the form of photons) conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in terms of the output of the Sun.
New!!: Circumstellar habitable zone and Solar luminosity · See more »
Solar System
The Solar SystemCapitalization of the name varies.
New!!: Circumstellar habitable zone and Solar System · See more »
Solar wind
The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona.
New!!: Circumstellar habitable zone and Solar wind · See more »
Solution
In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances.
New!!: Circumstellar habitable zone and Solution · See more »
Solvent
A solvent (from the Latin solvō, "loosen, untie, solve") is a substance that dissolves a solute (a chemically distinct liquid, solid or gas), resulting in a solution.
New!!: Circumstellar habitable zone and Solvent · See more »
Space colonization
Space colonization (also called space settlement, or extraterrestrial colonization) is permanent human habitation off the planet Earth.
New!!: Circumstellar habitable zone and Space colonization · See more »
Space habitat
A space habitat (also called a space colony, space settlement, orbital habitat, orbital settlement or orbital colony) is a type of space station, intended as a permanent settlement rather than as a simple way-station or other specialized facility.
New!!: Circumstellar habitable zone and Space habitat · See more »
Space suit
A space suit is a garment worn to keep a human alive in the harsh environment of outer space, vacuum and temperature extremes.
New!!: Circumstellar habitable zone and Space suit · See more »
Space.com
Space.com is a space and astronomy news website.
New!!: Circumstellar habitable zone and Space.com · See more »
Spectral line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.
New!!: Circumstellar habitable zone and Spectral line · See more »
Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
New!!: Circumstellar habitable zone and Star · See more »
Star system
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
New!!: Circumstellar habitable zone and Star system · See more »
Star Trek
Star Trek is an American media franchise based on the science fiction television series created by Gene Roddenberry.
New!!: Circumstellar habitable zone and Star Trek · See more »
Star Trek planet classification
The planet classification used in the Star Trek science fiction media franchise uses letters to refer to classes of planets and planetoids.
New!!: Circumstellar habitable zone and Star Trek planet classification · See more »
Starspot
Starspots are stellar phenomena.
New!!: Circumstellar habitable zone and Starspot · See more »
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
New!!: Circumstellar habitable zone and Stellar classification · See more »
Su-Shu Huang
Su-Shu Huang (黃授書, April 16, 1915 – September 15, 1977) was a Chinese-born American astrophysicist.
New!!: Circumstellar habitable zone and Su-Shu Huang · See more »
Sun
The Sun is the star at the center of the Solar System.
New!!: Circumstellar habitable zone and Sun · See more »
Super-Earth
A super-Earth is an extrasolar planet with a mass higher than Earth's, but substantially below the masses of the Solar System's ice giants, Uranus and Neptune, which have masses of 15 and 17 times Earth's, respectively.
New!!: Circumstellar habitable zone and Super-Earth · See more »
Tardigrade
Tardigrades (also known colloquially as water bears, or moss piglets) are water-dwelling, eight-legged, segmented micro-animals.
New!!: Circumstellar habitable zone and Tardigrade · See more »
Tau Ceti
Tau Ceti, Latinized from τ Ceti, is a single star in the constellation Cetus that is spectrally similar to the Sun, although it has only about 78% of the Sun's mass.
New!!: Circumstellar habitable zone and Tau Ceti · See more »
Teen Age Message
The Teen Age Message (TAM) was a series of interstellar radio transmissions sent from the Yevpatoria Planetary Radar to six solar-type stars during August–September 2001.
New!!: Circumstellar habitable zone and Teen Age Message · See more »
Terrestrial planet
A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals.
New!!: Circumstellar habitable zone and Terrestrial planet · See more »
The Astrophysical Journal
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
New!!: Circumstellar habitable zone and The Astrophysical Journal · See more »
The Guardian
The Guardian is a British daily newspaper.
New!!: Circumstellar habitable zone and The Guardian · See more »
The New York Times
The New York Times (sometimes abbreviated as The NYT or The Times) is an American newspaper based in New York City with worldwide influence and readership.
New!!: Circumstellar habitable zone and The New York Times · See more »
Tidal heating
Tidal heating (also known as tidal working or tidal flexing) occurs through the tidal friction processes: orbital energy is dissipated as heat in either the surface ocean or interior of a planet or satellite.
New!!: Circumstellar habitable zone and Tidal heating · See more »
Tidal locking
Tidal locking (also called gravitational locking or captured rotation) occurs when the long-term interaction between a pair of co-orbiting astronomical bodies drives the rotation rate of at least one of them into the state where there is no more net transfer of angular momentum between this body (e.g. a planet) and its orbit around the second body (e.g. a star); this condition of "no net transfer" must be satisfied over the course of one orbit around the second body.
New!!: Circumstellar habitable zone and Tidal locking · See more »
Titan (moon)
Titan is the largest moon of Saturn.
New!!: Circumstellar habitable zone and Titan (moon) · See more »
TRAPPIST-1
TRAPPIST-1, also designated as 2MASS J23062928-0502285, is an ultra-cool red dwarf star that is slightly larger, but much more massive, than the planet Jupiter; it is located from the Sun, in the direction described as the constellation Aquarius.
New!!: Circumstellar habitable zone and TRAPPIST-1 · See more »
Ultraviolet
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
New!!: Circumstellar habitable zone and Ultraviolet · See more »
University of Puerto Rico at Arecibo
The University of Puerto Rico at Arecibo (UPRA or UPR-Arecibo) is a state university located in the city of Arecibo, Puerto Rico, and part of the eleven campuses that compose the University of Puerto Rico system.
New!!: Circumstellar habitable zone and University of Puerto Rico at Arecibo · See more »
University of Washington
The University of Washington (commonly referred to as UW, simply Washington, or informally U-Dub) is a public research university in Seattle, Washington.
New!!: Circumstellar habitable zone and University of Washington · See more »
Upsilon Andromedae d
Upsilon Andromedae d (υ Andromedae d, abbreviated Upsilon And d, υ And d), also named Majriti, is a super-Jupiter exoplanet orbiting within the habitable zone of the Sun-like star Upsilon Andromedae A, approximately 44 light-years (13.5 parsecs, or nearly km) away from Earth in the constellation of Andromeda.
New!!: Circumstellar habitable zone and Upsilon Andromedae d · See more »
W. M. Keck Observatory
The W. M. Keck Observatory is a two-telescope astronomical observatory at an elevation of 4,145 meters (13,600 ft) near the summit of Mauna Kea in the U.S. state of Hawaii.
New!!: Circumstellar habitable zone and W. M. Keck Observatory · See more »
Water
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.
New!!: Circumstellar habitable zone and Water · See more »
Water distribution on Earth
Water is distributed across earth.
New!!: Circumstellar habitable zone and Water distribution on Earth · See more »
Water hole (radio)
The waterhole, or water hole, is an especially quiet band of the electromagnetic spectrum between 1,420 and 1,666 megahertz, corresponding to wavelengths of 21 and 18 centimeters respectively.
New!!: Circumstellar habitable zone and Water hole (radio) · See more »
White dwarf
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
New!!: Circumstellar habitable zone and White dwarf · See more »
Wired (magazine)
Wired is a monthly American magazine, published in print and online editions, that focuses on how emerging technologies affect culture, the economy, and politics.
New!!: Circumstellar habitable zone and Wired (magazine) · See more »
Xanthoria elegans
Xanthoria elegans, commonly known as the elegant sunburst lichen, is a lichenized species of fungus in the genus Xanthoria, family Teloschistaceae.
New!!: Circumstellar habitable zone and Xanthoria elegans · See more »
Zoltán Balog (astronomer)
Zoltán Balog, PhD (born 1972 in Szolnok, Hungary) is an astronomer with the Max Planck Institute for Astronomy in Heidelberg, Germany.
New!!: Circumstellar habitable zone and Zoltán Balog (astronomer) · See more »
16 Cygni Bb
16 Cygni Bb or HD 186427 b is an extrasolar planet approximately 69 light-years away in the constellation of Cygnus.
New!!: Circumstellar habitable zone and 16 Cygni Bb · See more »
47 Ursae Majoris
47 Ursae Majoris (abbreviated 47 UMa), also named Chalawan (ชาละวัน), is a yellow dwarf star approximately 46 light-years from Earth in the constellation of Ursa Major.
New!!: Circumstellar habitable zone and 47 Ursae Majoris · See more »
55 Cancri
55 Cancri (abbreviated 55 Cnc) is a binary star approximately 41 light-years away from the Sun in the constellation of Cancer.
New!!: Circumstellar habitable zone and 55 Cancri · See more »
55 Cancri f
55 Cancri f (abbreviated 55 Cnc f), also designated Rho1 Cancri f and named Harriot, is an extrasolar planet approximately 41 light-years away from Earth in the constellation of Cancer (the Crab).
New!!: Circumstellar habitable zone and 55 Cancri f · See more »
70 Virginis b
70 Virginis b (abbreviated 70 Vir b) is an extrasolar planet approximately 60 light-years away in the constellation of Virgo.
New!!: Circumstellar habitable zone and 70 Virginis b · See more »
Redirects here:
CHZ (astronomy), Circumstellar Habitable Zones, Comfort zone (astronomy), Continuous habitable zone, Continuously habitable zone, Goldilock's zone, Goldilocks Zone, Goldilocks planet, Goldilocks zone, Habitability zone, Habitable Zone, Habitable zone, Solar Habitable Zone, Solar System Habitable Zone, The Circumstellar habitable zone.
References
[1] https://en.wikipedia.org/wiki/Circumstellar_habitable_zone
