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97 relations: Accretion (astrophysics), Aerobraking, Albedo, American Institute of Aeronautics and Astronautics, Angular diameter, Apparent magnitude, Ares, Asaph Hall, Asteroid, Asteroid belt, Asteroid capture, Atmosphere of Mars, Binary asteroid, Brown University, C-type asteroid, Carbonaceous chondrite, Carle M. Pieters, Celestial equator, Coordinated Universal Time, D-type asteroid, Deimos (deity), Density, Diameter, Discovery Program, Drag (physics), Earth, Eclipse, Ecliptic, Electromagnetic spectrum, Eponym, Escape velocity, Eton College, Exploration of Mars, Fear, G-force, Geoffrey A. Landis, Glenn Research Center, Greek mythology, Henry George Madan, Hour, Iliad, Impact crater, Jet Propulsion Laboratory, Jonathan Swift, Julian day, Jupiter, Kelvin, Laplace plane, List of natural satellites, Mars, ..., Mars (mythology), Mars Reconnaissance Orbiter, Mercury (planet), MESSENGER, Metre per second, Micro-, Milli-, Monthly Notices of the Royal Astronomical Society, Moon, Moons of Mars, Nano-, New Frontiers program, Opportunity (rover), Orbit, Orbital eccentricity, Orbital period, OSIRIS-REx, Phobos (moon), Phobos (mythology), Phobos And Deimos & Mars Environment, Phobos and Deimos in fiction, Phobos program, Planetesimal, Porosity, Regolith, Robert S. Richardson, Sample-return mission, Spirit (rover), Springer Science+Business Media, Swift (Deimian crater), Telescope, The Planetary Society, Tidal acceleration, Tidal force, Tidal locking, Timekeeping on Mars, Transit (astronomy), Transit of Deimos from Mars, Transit of Venus, United States Geological Survey, United States Naval Observatory, Vega, Venus, Voltaire, Voltaire (crater), Washington Mean Time, Washington, D.C.. Expand index (47 more) »
Accretion (astrophysics)
In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, in an accretion disk.
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Aerobraking
Aerobraking is a spaceflight maneuver that reduces the high point of an elliptical orbit (apoapsis) by flying the vehicle through the atmosphere at the low point of the orbit (periapsis).
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Albedo
Albedo (albedo, meaning "whiteness") is the measure of the diffuse reflection of solar radiation out of the total solar radiation received by an astronomical body (e.g. a planet like Earth).
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American Institute of Aeronautics and Astronautics
The American Institute of Aeronautics and Astronautics (AIAA) is a professional society for the field of aerospace engineering.
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Angular diameter
The angular diameter, angular size, apparent diameter, or apparent size is an angular measurement describing how large a sphere or circle appears from a given point of view.
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Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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Ares
Ares (Ἄρης, Áres) is the Greek god of war.
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Asaph Hall
Asaph Hall III (October 15, 1829 – November 22, 1907) was an American astronomer who is most famous for having discovered the moons of Mars, Deimos and Phobos, in 1877.
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Asteroid
Asteroids are minor planets, especially those of the inner Solar System.
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Asteroid belt
The asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter.
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Asteroid capture
Asteroid capture is the entering by an asteroid into an orbit around a larger planetary body.
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Atmosphere of Mars
The atmosphere of the planet Mars is composed mostly of carbon dioxide.
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Binary asteroid
A binary asteroid is a system of two asteroids orbiting their common barycenter.
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Brown University
Brown University is a private Ivy League research university in Providence, Rhode Island, United States.
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C-type asteroid
C-type (carbonaceous) asteroids are the most common variety, forming around 75% of known asteroids.
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Carbonaceous chondrite
Carbonaceous chondrites or C chondrites are a class of chondritic meteorites comprising at least 8 known groups and many ungrouped meteorites.
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Carle M. Pieters
Carle McGetchin Pieters (born 1943) is a noted American planetary scientist.
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Celestial equator
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
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Coordinated Universal Time
No description.
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D-type asteroid
D-type asteroids have a very low albedo and a featureless reddish spectrum.
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Deimos (deity)
Deimos (Δεῖμος,, meaning “dread”) is the god of terror in Greek mythology.
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Density
The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.
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Diameter
In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.
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Discovery Program
NASA's Discovery Program is a series of lower-cost (as compared to New Frontiers or Flagship Programs), highly focused American scientific space missions that are exploring the Solar System.
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Drag (physics)
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.
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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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Eclipse
An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having another body pass between it and the viewer.
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Ecliptic
The ecliptic is the circular path on the celestial sphere that the Sun follows over the course of a year; it is the basis of the ecliptic coordinate system.
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Electromagnetic spectrum
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
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Eponym
An eponym is a person, place, or thing after whom or after which something is named, or believed to be named.
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Escape velocity
In physics, escape velocity is the minimum speed needed for an object to escape from the gravitational influence of a massive body.
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Eton College
Eton College is an English independent boarding school for boys in Eton, Berkshire, near Windsor.
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Exploration of Mars
The planet Mars has been explored remotely by spacecraft.
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Fear
Fear is a feeling induced by perceived danger or threat that occurs in certain types of organisms, which causes a change in metabolic and organ functions and ultimately a change in behavior, such as fleeing, hiding, or freezing from perceived traumatic events.
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G-force
The gravitational force, or more commonly, g-force, is a measurement of the type of acceleration that causes a perception of weight.
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Geoffrey A. Landis
Geoffrey Alan Landis (born May 28, 1955) is an American scientist, working for the National Aeronautics and Space Administration (NASA) on planetary exploration, interstellar propulsion, solar power and photovoltaics.
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Glenn Research Center
NASA John H. Glenn Research Center at Lewis Field is a NASA center, located within the cities of Brook Park and Cleveland between Cleveland Hopkins International Airport and the Rocky River Reservation of Cleveland Metroparks, with a subsidiary facility in Sandusky, Ohio.
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Greek mythology
Greek mythology is the body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.
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Henry George Madan
Henry George Madan (6 September 1838 – 22 December 1901) was an English chemist, teacher and academic.
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Hour
An hour (symbol: h; also abbreviated hr.) is a unit of time conventionally reckoned as of a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions.
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Iliad
The Iliad (Ἰλιάς, in Classical Attic; sometimes referred to as the Song of Ilion or Song of Ilium) is an ancient Greek epic poem in dactylic hexameter, traditionally attributed to Homer.
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Impact crater
An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body.
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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.
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Jonathan Swift
Jonathan Swift (30 November 1667 – 19 October 1745) was an Anglo-Irish satirist, essayist, political pamphleteer (first for the Whigs, then for the Tories), poet and cleric who became Dean of St Patrick's Cathedral, Dublin.
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Julian day
Julian day is the continuous count of days since the beginning of the Julian Period and is used primarily by astronomers.
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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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Laplace plane
The Laplace plane or Laplacian plane of a planetary satellite, named after its discoverer Pierre-Simon Laplace (1749–1827), is a mean or reference plane about whose axis the instantaneous orbital plane of a satellite precesses.
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List of natural satellites
The Solar System's planets and officially recognized dwarf planets are known to be orbited by 184 natural satellites, or moons.
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Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
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Mars (mythology)
In ancient Roman religion and myth, Mars (Mārs) was the god of war and also an agricultural guardian, a combination characteristic of early Rome.
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Mars Reconnaissance Orbiter
Mars Reconnaissance Orbiter (MRO) is a multipurpose spacecraft designed to conduct reconnaissance and exploration of Mars from orbit.
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Mercury (planet)
Mercury is the smallest and innermost planet in the Solar System.
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MESSENGER
Messenger (stylized as MESSENGER, whose backronym is "MErcury Surface, Space ENvironment, GEochemistry, and Ranging", and which is a reference to the messenger of the same name from Roman mythology) was a NASA robotic spacecraft that orbited the planet Mercury between 2011 and 2015.
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Metre per second
Metre per second (American English: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.
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Micro-
Micro- (symbol µ) is a unit prefix in the metric system denoting a factor of 10−6 (one millionth).
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Milli-
Milli- (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10−3).
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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.
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Moon
The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.
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Moons of Mars
The two moons of Mars are Phobos and Deimos.
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Nano-
Nano- (symbol n) is a unit prefix meaning "one billionth".
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New Frontiers program
The New Frontiers program is a series of space exploration missions being conducted by NASA with the purpose of researching several of the Solar System bodies, including the dwarf planet Pluto.
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Opportunity (rover)
Opportunity, also known as MER-B (Mars Exploration Rover – B) or MER-1, is a robotic rover active on Mars since 2004.
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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 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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OSIRIS-REx
The OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer) is a NASA asteroid study and sample-return mission.
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Phobos (moon)
Phobos (systematic designation) is the innermost and larger of the two natural satellites of Mars, the other being Deimos.
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Phobos (mythology)
Phobos (Φόβος,, meaning "fear") is the personification of fear in Greek mythology.
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Phobos And Deimos & Mars Environment
Phobos And Deimos & Mars Environment (PADME) is a low-cost NASA Mars orbiter mission concept that would address longstanding unknowns about Mars' two moons Phobos and Deimos and their environment.
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Phobos and Deimos in fiction
Mars has two moons, Phobos and Deimos.
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Phobos program
The Phobos (Фобос, Fobos, Φόβος) program was an unmanned space mission consisting of two probes launched by the Soviet Union to study Mars and its moons Phobos and Deimos.
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Planetesimal
Planetesimals are solid objects thought to exist in protoplanetary disks and in debris disks.
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Porosity
Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%.
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Regolith
Regolith is a layer of loose, heterogeneous superficial deposits covering solid rock.
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Robert S. Richardson
Robert Shirley Richardson (April 22, 1902 – November 12, 1981) was an American astronomer, born in Kokomo, Indiana.
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Sample-return mission
A sample-return mission is a spacecraft mission with the goal of collecting and returning with tangible samples from an extraterrestrial location to Earth for analysis.
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Spirit (rover)
Spirit, also known as MER-A (Mars Exploration Rover – A) or MER-2, is a robotic rover on Mars, active from 2004 to 2010.
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Springer Science+Business Media
Springer Science+Business Media or Springer, part of Springer Nature since 2015, is a global publishing company that publishes books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.
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Swift (Deimian crater)
Swift crater is a crater on Mars's moon Deimos.
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Telescope
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).
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The Planetary Society
The Planetary Society is an American internationally active, non-governmental, nonprofit foundation.
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Tidal acceleration
Tidal acceleration is an effect of the tidal forces between an orbiting natural satellite (e.g. the Moon), and the primary planet that it orbits (e.g. Earth).
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Tidal force
The tidal force is an apparent force that stretches a body towards the center of mass of another body due to a gradient (difference in strength) in gravitational field from the other body; it is responsible for the diverse phenomena, including tides, tidal locking, breaking apart of celestial bodies and formation of ring systems within Roche limit, and in extreme cases, spaghettification of objects.
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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.
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Timekeeping on Mars
Various schemes have been used or proposed for timekeeping on the planet Mars independently of Earth time and calendars.
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Transit (astronomy)
In astronomy, a transit or astronomical transit is the phenomenon of at least one celestial body appearing to move across the face of another celestial body, hiding a small part of it, as seen by an observer at some particular vantage point.
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Transit of Deimos from Mars
A transit of Deimos across the Sun as seen from Mars occurs when Deimos passes directly between the Sun and a point on the surface of Mars, obscuring a small part of the Sun's disc for an observer on Mars.
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Transit of Venus
A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and a superior planet, becoming visible against (and hence obscuring a small portion of) the solar disk.
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United States Geological Survey
The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.
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United States Naval Observatory
The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.
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Vega
Vega, also designated Alpha Lyrae (α Lyrae, abbreviated Alpha Lyr or α Lyr), is the brightest star in the constellation of Lyra, the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus.
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Venus
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.
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Voltaire
François-Marie Arouet (21 November 1694 – 30 May 1778), known by his nom de plume Voltaire, was a French Enlightenment writer, historian and philosopher famous for his wit, his attacks on Christianity as a whole, especially the established Catholic Church, and his advocacy of freedom of religion, freedom of speech and separation of church and state.
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Voltaire (crater)
Voltaire is an impact crater on Mars's moon Deimos and is approximately across.
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Washington Mean Time
Washington Mean Time was the time at the meridian through the center of the old dome atop the main building at the old US Naval Observatory at Washington, D.C. This Washington meridian was defined on 28 September 1850 by the United States Congress.
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Washington, D.C.
Washington, D.C., formally the District of Columbia and commonly referred to as Washington or D.C., is the capital of the United States of America.
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Redirects here:
Deimos (astronomy), Deimos (natural satellite), Deimos (satellite), Mars II.
References
[1] https://en.wikipedia.org/wiki/Deimos_(moon)
