66 relations: Aquarius (constellation), Astrometry, Astronomical unit, Brown dwarf, Chemical equilibrium, Circumstellar habitable zone, Cloud, Day, Doppler effect, Dynamo theory, Earth, Europa (moon), Exoplanet, Fine guidance sensor, Galileo (spacecraft), Ganymede (moon), Gas giant, Geneva Extrasolar Planet Search, Geneva Observatory, Geoffrey Marcy, Gliese 876, Gliese 876 c, Gliese 876 e, Gravity, Haute-Provence Observatory, Heliocentric Julian Day, Hubble Space Telescope, Io (moon), Jupiter, Kelvin, La Silla Observatory, Lick Observatory, Lick–Carnegie Exoplanet Survey, Life, Light-year, Liquid, Magnetic field, Mass, Mercury (planet), Natural satellite, Nature (journal), Orbit, Orbital eccentricity, Orbital elements, Orbital inclination, Orbital period, Orbital resonance, Planetary equilibrium temperature, Planetary habitability, Plate tectonics, ..., Radial velocity, Radius, Red dwarf, Semi-major and semi-minor axes, Solar System, Solid, Spectral line, Sputtering, Star, Stellar wind, Sudarsky's gas giant classification, Temperature, Tide, True mass, W. M. Keck Observatory, Water. Expand index (16 more) »
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces.
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Astrometry
Astrometry is the branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies.
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Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
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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.
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Chemical equilibrium
In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
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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.
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Cloud
In meteorology, a cloud is an aerosol consisting of a visible mass of minute liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body.
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Day
A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun (solar day).
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Doppler effect
The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to observer who is moving relative to the wave source.
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Dynamo theory
In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field.
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Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
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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.
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Exoplanet
An exoplanet or extrasolar planet is a planet outside our solar system.
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Fine guidance sensor
A fine guidance sensor (FGS) is an instrument on board a space telescope that provides high-precision pointing information as input to the observatory's attitude control systems.
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Galileo (spacecraft)
Galileo was an American unmanned spacecraft that studied the planet Jupiter and its moons, as well as several other Solar System bodies.
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Ganymede (moon)
Ganymede (Jupiter III) is the largest and most massive moon of Jupiter and in the Solar System.
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Gas giant
A gas giant is a giant planet composed mainly of hydrogen and helium.
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Geneva Extrasolar Planet Search
The Geneva Extrasolar Planet Search is a variety of observational programs run by the Geneva Observatory located at Versoix, a small town near Geneva, Switzerland.
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Geneva Observatory
The Geneva Observatory (Observatoire de Genève, Observatorium von Genf) is an astronomical observatory at Sauverny (CH) in the municipality of Versoix, Canton of Geneva, in Switzerland.
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Geoffrey Marcy
Geoffrey William Marcy (born September 29, 1954) is an American astronomer.
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Gliese 876
Gliese 876 is a red dwarf approximately 15 light-years away from Earth in the constellation of Aquarius.
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Gliese 876 c
Gliese 876 c is an exoplanet orbiting the red dwarf Gliese 876, taking about 30 days to complete an orbit.
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Gliese 876 e
Gliese 876 e is an exoplanet orbiting the star Gliese 876 in the constellation of Aquarius.
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Gravity
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.
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Haute-Provence Observatory
The Haute-Provence Observatory (OHP, Observatoire de Haute-Provence) is an astronomical observatory in the southeast of France, about 90 km east of Avignon and 100 km north of Marseille.
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Heliocentric Julian Day
The Heliocentric Julian Date (HJD) is the Julian Date (JD) corrected for differences in the Earth's position with respect to the Sun.
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Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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Io (moon)
Io (Jupiter I) is the innermost of the four Galilean moons of the planet Jupiter.
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Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
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Kelvin
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
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La Silla Observatory
La Silla Observatory is an astronomical observatory in Chile with three telescopes built and operated by the European Southern Observatory (ESO).
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Lick Observatory
The Lick Observatory is an astronomical observatory, owned and operated by the University of California.
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Lick–Carnegie Exoplanet Survey
The Lick–Carnegie Exoplanet Survey (LCES) is a search for exoplanets using the Keck I optical telescope of the W. M. Keck Observatory in Hawaii.
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Life
Life is a characteristic that distinguishes physical entities that do have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased, or because they never had such functions and are classified as inanimate.
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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.
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Liquid
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure.
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Magnetic field
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
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Mass
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
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Mercury (planet)
Mercury is the smallest and innermost planet in the Solar System.
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Natural satellite
A natural satellite or moon is, in the most common usage, an astronomical body that orbits a planet or minor planet (or sometimes another small Solar System body).
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Nature (journal)
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
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Orbit
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
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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.
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Orbital elements
Orbital elements are the parameters required to uniquely identify a specific orbit.
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Orbital inclination
Orbital inclination measures the tilt of an object's orbit around a celestial body.
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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.
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Orbital resonance
In celestial mechanics, an orbital resonance occurs when orbiting bodies exert a regular, periodic gravitational influence on each other, usually because their orbital periods are related by a ratio of small integers.
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Planetary equilibrium temperature
The planetary equilibrium temperature is a theoretical temperature that a planet would be at when considered simply as if it were a black body being heated only by its parent star.
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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.
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Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the τεκτονικός "pertaining to building") is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago.
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Radial velocity
The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point.
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Radius
In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.
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Red dwarf
A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.
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Semi-major and semi-minor axes
In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the widest points of the perimeter.
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Solar System
The Solar SystemCapitalization of the name varies.
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Solid
Solid is one of the four fundamental states of matter (the others being liquid, gas, and plasma).
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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.
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Sputtering
Sputtering is a process whereby particles are ejected from a solid target material due to bombardment of the target by energetic particles, particularly gas ions in a laboratory.
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Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
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Stellar wind
A stellar wind is a flow of gas ejected from the upper atmosphere of a star.
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Sudarsky's gas giant classification
Sudarsky's classification of gas giants for the purpose of predicting their appearance based on their temperature was outlined by David Sudarsky and colleagues in the paper Albedo and Reflection Spectra of Extrasolar Giant Planets and expanded on in Theoretical Spectra and Atmospheres of Extrasolar Giant Planets, published before any successful direct or indirect observation of an extrasolar planet atmosphere was made.
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Temperature
Temperature is a physical quantity expressing hot and cold.
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Tide
Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of Earth.
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True mass
The term true mass is synonymous with the term mass, but is used in astronomy to differentiate the measured mass of a planet from the lower limit of mass usually obtained from radial velocity techniques.
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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.
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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.
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References
[1] https://en.wikipedia.org/wiki/Gliese_876_b