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6,312 Organic Object topics matching:
Filter this Collection| x name | x image | x article |
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| x Asteroid |
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Asteroids (from Greek ἀστεροειδής - asteroeidēs, "star-like", from ἀστήρ "star" and εἶδος "like, in form") are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones. These...
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| x Black hole |
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A black hole is a region of spacetime where gravity is so strong that nothing that enters the region, not even light, can escape. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole....
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| x Comet |
A comet is an icy small Solar System body (SSSB) that, when close enough to the Sun, displays a visible coma (a thin, fuzzy, temporary atmosphere) and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the...
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| x Cubewano |
A classical Kuiper belt object, also called a cubewano ( /ˌkjuːbiːˈwʌnoʊ/ "QB1-o") is a low-eccentricity Kuiper belt object (KBO) that orbits beyond Neptune and is not controlled by an orbital resonance with Neptune. Cubewanos have orbits with semi...
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| x Galaxy |
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A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust, and an important but poorly understood component tentatively dubbed dark matter. The word galaxy is derived from...
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| x Galaxy groups and clusters |
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Galaxy groups and clusters are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation. They form the densest part of the large scale structure of the universe. In models for the...
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| x Globular cluster |
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A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes and relatively high stellar densities toward their centers...
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| x Interstellar cloud |
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Interstellar cloud is the generic name given to an accumulation of gas, plasma and dust in our and other galaxies. Put differently, an interstellar cloud is a denser-than-average region of the interstellar medium. Depending on the density, size and...
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| x Nebula |
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A nebula (from Latin: "cloud"; pl. nebulae or nebulæ, with ligature or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, nebula was a general name for any extended astronomical object, including...
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| x Open cluster |
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An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way Galaxy, and many more are thought to...
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| x Planet |
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A planet (from Ancient Greek πλανήτης αστήρ (planētēs astēr), meaning "wandering star") is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear...
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| x Plutino |
In astronomy, a plutino is a trans-Neptunian object in 2:3 mean motion resonance with Neptune. For every 2 orbits that a plutino makes, Neptune orbits 3 times. Plutinos are named after Pluto, which follows an orbit trapped in the same resonance,...
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| x Red Dwarf |
Red Dwarf is a British comedy franchise which primarily comprises eight series (plus a ninth smaller series named Back To Earth) of a television science fiction sitcom that aired on BBC Two between 1988 and 1999 and on Dave in 2009 and 2012. It...
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| x Star |
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A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth....
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| x Supernova |
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A supernova (abbreviated SN, plural SNe after supernovae) is a stellar explosion that is more energetic than a nova. It is pronounced /ˌsuːpərˈnoʊvə/ with the plural supernovae /ˌsuːpərˈnoʊviː/ or supernovas. Supernovae are extremely luminous and...
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| x Trans-Neptunian object |
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A trans-Neptunian object (TNO; also written transneptunian object) is any minor planet in the Solar System that orbits the Sun at a greater average distance (semi-major axis) than Neptune.
The first trans-Neptunian object to be discovered was Pluto...
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| x Universe |
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The universe is commonly defined as the totality of everything that exists, including all matter and energy, the planets, stars, galaxies, and the contents of intergalactic space. Definitions and usage vary and similar terms include the cosmos, the...
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| x White dwarf |
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A white dwarf, also called a degenerate dwarf, is a small star composed mostly of electron-degenerate matter. They are very dense; a white dwarf's mass is comparable to that of the Sun and its volume is comparable to that of the Earth. Its faint...
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| x Brown dwarf |
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Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical...
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| x Natural satellite |
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A natural satellite or moon is a celestial body that orbits a planet or smaller body, which is called its primary.
Formally classified moons include 173 planetary satellites orbiting six of the eight planets, and seven orbiting three of the five IAU...
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| x Red giant |
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A red giant is a luminous giant star of low or intermediate mass (roughly 0.5–10 solar masses) in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius immense and the surface temperature low, somewhere...
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| x Meteoroid |
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A meteoroid is a sand- to boulder-sized particle of debris in the Solar System. The visible path of a meteoroid that enters Earth's (or another body's) atmosphere is called a meteor, or colloquially a shooting star or falling star. If a meteoroid...
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| x Centaur |
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Centaurs are an unstable orbital class of minor planets that behave with characteristics of both asteroids and comets. They are named after the mythological race of beings, centaurs, which were a mixture of horse and human. Centaurs have transient...
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| x Giant star |
A giant star is a star with substantially larger radius and luminosity than a main-sequence star of the same surface temperature. Typically, giant stars have radii between 10 and 100 solar radii and luminosities between 10 and 1,000 times that of...
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| x Galaxy filament |
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In physical cosmology, galaxy filaments, also called supercluster complexes or great walls, are, so far, the largest known cosmic structures in the universe. They are massive, thread-like structures with a typical length of 50 to 80 megaparsecs h...
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| x Resonant trans-Neptunian object |
In astronomy, a resonant trans-Neptunian object is a trans-Neptunian object (TNO) in mean motion orbital resonance with Neptune. The orbital periods of the resonant objects are in a simple integer relations with the period of Neptune e.g. 1:2, 2:3...
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| x Dwarf planet |
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A dwarf planet, as defined by the International Astronomical Union (IAU), is a celestial body in direct orbit of the Sun that is massive enough that its shape is controlled by gravitational rather than mechanical forces (and thus an ellipsoid in...
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| x Small solar system body |
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A small Solar System body (SSSB) is an object in the Solar System that is neither a planet nor a dwarf planet, nor a satellite of a planet or dwarf planet:
This encompasses all comets and all minor planets other than those classified as dwarf...
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| x Plutoid |
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A plutoid, or ice dwarf, is a trans-Neptunian dwarf planet: that is, a body orbiting beyond Neptune that is large enough to be rounded in shape. The term was adopted by part of the International Astronomical Union (IAU), but has been rejected by...
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| x Detached object |
Detached objects are a dynamical class of bodies in the outer Solar System beyond the orbit of Neptune. These objects have orbits whose points of closest approach to the Sun (perihelion) are sufficiently distant from the gravitational influence of...
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| x Cis-Neptunian object |
A cis-Neptunian object is, literally, any astronomical body found within the orbit of Neptune. However, the term is typically used for those distant minor planets other than trans-Neptunian objects: that is, all sub-planetary bodies orbiting the Sun...
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| x Kuiper belt object | ||
| x Scattered disc object | ||
| x Galaxy wall |
The Galaxy wall subtype of Galactic filaments have a significantly greater major axis than minor axis in cross-section, along the lengthwise axis.
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| x High Velocity Cloud | ||
| x Adrastea |
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Adrastea ( /ˌædrəˈstiːə/ AD-rə-STEE-ə; Greek: Αδράστεια), also known as Jupiter XV, is the second by distance, and the smallest of the four inner moons of Jupiter. It was discovered in Voyager 2 probe photographs taken in 1979, making it the first...
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| x Carme |
Carme ( /ˈkɑrmiː/ kar-mee; Greek: Κάρμη) is a retrograde irregular satellite of Jupiter. It was discovered by Seth Barnes Nicholson at Mount Wilson Observatory in California in July 1938. It is named after the mythological Carme, mother by Zeus of...
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| x Lysithea |
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Lysithea ( /laɪˈsɪθiə/ ly-SITH-ee-ə, /lɨˈsɪθiə/ li-SITH-ee-ə; Greek: Λυσιθέα) is a prograde irregular satellite of Jupiter. It was discovered by Seth Barnes Nicholson in 1938 at Mount Wilson Observatory and is named after the mythological Lysithea,...
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| x Moon |
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The Moon is the only natural satellite of the Earth, and the fifth largest satellite in the Solar System. It is the largest natural satellite of a planet in the Solar System relative to the size of its primary, having a quarter the diameter of Earth...
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| x Miranda |
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Miranda ( /mɨˈrændə/) is the smallest and innermost of Uranus's five major moons.
It was discovered by Gerard Kuiper on February 16, 1948 at McDonald Observatory. It was named after Miranda from William Shakespeare's play The Tempest by Kuiper in...
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| x Nereid |
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Nereid ( /ˈnɪəri.ɪd/ or /ˈnɛri.ɪd/; Greek: Νηρηΐδα), also known as Neptune II, is the third-largest moon of Neptune. It has a highly eccentric orbit. Nereid was discovered by Gerard Kuiper in 1949 and was the second moon of Neptune to be discovered....
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| x Naiad |
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Naiad ( /ˈneɪ.əd/ nay-əd or /ˈnaɪ.əd/ ny-əd; Greek: Ναϊάδ-ες), also known as Neptune III, is the innermost satellite of Neptune, named after the Naiads of Greek legend.
Naiad was discovered sometime before mid-September 1989 from the images taken by...
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| x Telesto |
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Telesto ( /tɨˈlɛstoʊ/ tə-les-toh, Greek: Τελεστώ) is a moon of Saturn. It was discovered by Smith, Reitsema, Larson and Fountain in 1980 from ground-based observations, and was provisionally designated S/1980 S 13. In the following months, several...
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| x Umbriel |
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Umbriel is a moon of Uranus discovered on October 24, 1851, by William Lassell. It was discovered at the same time as Ariel and named after a character in Alexander Pope's poem The Rape of the Lock. Umbriel consists mainly of ice with a substantial...
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| x Callisto |
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Callisto /kəˈlɪstoʊ/ (Jupiter IV) is a moon of the planet Jupiter. It was discovered in 1610 by Galileo Galilei. It is the third-largest moon in the Solar System and the second largest in the Jovian system, after Ganymede. Callisto has about 99%...
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| x Europa |
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Europa /jʊˈroʊpə/ (Jupiter II), is the sixth closest moon of the planet Jupiter, and the smallest of its four Galilean satellites, but still one of the largest bodies in the Solar system. Europa was discovered in 1610 by Galileo Galilei and possibly...
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| x Triton |
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Triton is the largest moon of the planet Neptune, discovered on October 10, 1846, by English astronomer William Lassell. It is the only large moon in the Solar System with a retrograde orbit, which is an orbit in the opposite direction to its planet...
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| x Metis |
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Metis ( /ˈmiːtɨs/ MEE-təs; Greek: Μήτις), also known as Jupiter XVI, is the innermost moon of Jupiter. It was discovered in 1979 in images taken by Voyager 1, and was named in 1983 after the first wife of Zeus, Metis. Additional observations made...
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| x Amalthea |
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Amalthea ( /ˌæməlˈθiːə/ AM-əl-THEE-ə; Greek: Αμάλθεια) is the third moon of Jupiter in order of distance from the planet. It was discovered on September 9, 1892, by Edward Emerson Barnard and named after Amalthea, a nymph in Greek mythology. It is...
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| x Titan |
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Titan (or Saturn VI) is the largest moon of Saturn. It is the only natural satellite known to have a dense atmosphere, and the only object other than Earth for which clear evidence of stable bodies of surface liquid has been found.
Titan is the...
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| x Atlas |
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Atlas is an inner satellite of Saturn.
Atlas was discovered by Richard Terrile in 1980 (some time before November 12) from Voyager photos and was designated S/1980 S 28. In 1983 it was officially named after Atlas of Greek mythology, because it ...
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| x Phobos |
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Phobos ( /ˈfoʊbəs/ FOH-bəs; Greek: Φόβος; systematic designation: Mars I) is the larger and closer of the two natural satellites of Mars. With a mean radius of 11.1 km (6.9 mi), Phobos is 7.24 times as massive as the second moon Deimos. It is named...
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| x Puck |
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Puck ( /ˈpʌk/ PUK) is an inner moon of Uranus. It was discovered in December 1985 by the Voyager 2 spacecraft. The name Puck comes from Celtic mythology and English folklore. The orbit of Puck lies between the rings of Uranus and the first of Uranus...
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| x Ganymede |
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Ganymede /ˈɡænɨmiːd/ (Jupiter III) is a satellite of Jupiter and the largest moon in the Solar System. It is the seventh moon and third Galilean satellite outward from Jupiter. Completing an orbit in roughly seven days, Ganymede participates in a 1...
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| x Rhea |
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Rhea ( /ˈriːə/; Greek: Ῥέᾱ) is the second-largest moon of Saturn and the ninth largest moon in the Solar System. It was discovered in 1672 by Giovanni Domenico Cassini.
Rhea is named after the Titan Rhea of Greek mythology, "mother of the gods". It...
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| x Helene |
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Helene ( /ˈhɛlɨniː/ HEL-ə-nee; Greek: Ἑλένη) is a moon of Saturn. It was discovered by Pierre Laques and Jean Lecacheux in 1980 from ground-based observations at Pic du Midi Observatory, and was designated S/1980 S 6. In 1988 it was officially named...
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| x Oberon |
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Oberon ( /ˈoʊbərɒn/), also designated Uranus IV, is the outermost major moon of the planet Uranus. It is the second largest and second most massive of the Uranian moons, and the ninth most massive moon in the Solar System. Discovered by William...
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| x Deimos |
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Deimos ( /ˈdaɪməs/ DY-məs; also /ˈdiːməs/ DEE-məs; Greek: Δείμος; also DAY-moce or DEE-moce) is the smaller and outer of Mars's two moons (the other being Phobos). It is named after Deimos, a figure representing dread in Greek Mythology. Its...
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| x Cordelia |
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Cordelia ( /kɔrˈdiːliə/ kor-DEE-lee-ə) is the innermost known moon of Uranus. It was discovered from the images taken by Voyager 2 on January 20, 1986, and was given the temporary designation S/1986 U 7. It was not detected again until the Hubble...
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| x Ophelia |
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Ophelia ( /ɵˈfiːliə/ o-FEE-lee-ə) is a moon of Uranus. It was discovered from the images taken by Voyager 2 on January 20, 1986, and was given the temporary designation S/1986 U 8. It was not seen until the Hubble Space Telescope recovered it in...
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