Exoplanetology

Planetary Classification Filter Planetary Classification topics

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x Terrestrial planet The inner planets, Mercury, Venus, Earth, and Mars, their sizes to scale.
A terrestrial planet, telluric planet or rocky planet is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun. The terms are derived from Latin...
x Gas giant The solar system's four gas giants against the Sun's limb, to scale
x Hot Jupiter Artist's impression of "roaster" extrasolar planet HD 209458b (Osiris)
Hot Jupiters (also called roaster planets, epistellar jovians, pegasids or pegasean planets) are a class of extrasolar planet whose mass is close to or exceeds that of Jupiter (1.9×10 kg). While Jupiter orbits its parent star (the Sun) at 5.2...
x Puffy planet  
Puffy planets, also called fluffy planets, is a generic and seldom used term to describe gas giant planets that have a density less than 0.5 g/cm³. Puffy planets often orbit close to their stars because the intense heat from the star and internal...
x Superjovian  
x Super-Earth Superearth1
A super-Earth is an extrasolar planet with a mass higher than Earth's, but substantially below the mass of the Solar System's smaller gas giants Uranus and Neptune, which are both more or less 15 Earth masses. The term super-Earth refers only to the...
x Eccentric Jupiter PlanetQuest-HD96167b
An eccentric Jupiter is a Jovian planet that orbits its star in an eccentric orbit. Eccentric Jupiters may disqualify a planetary system from having Earth-like planets in it because a massive gas giant with an eccentric orbit may remove all Earth...
x Ocean planet Ocean world
x Chthonian planet  
A chthonian planet ( /ˈkθoʊniən/, sometimes misspelled 'cthonian') is a hypothetical class of celestial objects resulting from the stripping away of a gas giant's hydrogen and helium atmosphere and outer layers, which is called hydrodynamic escape....
x Desert planet Planet 75%+ Desert Planet
A desert planet is a single-biome planet on which the climate is mostly desert, with little or no natural precipitation. Desert planets are known to exist; Mars is often considered a prime example. Indeed, many terrestrial planets would be...
x Pulsar planet Ssc2006-10c
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