Terrestrial Planet
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A Terrestrial Planet is a planet that is composed primarily of silicates.
- Context:
- It can range from being a Hot Terrestrial Planet, to being a Goldi-Locks Terrestrial Planet, to being a Cold Terrestrial Planet.
- It can range from being a Smaller-than-Earth Terrestrial Planet to being an Earth-sized Terrestrial Planet to being a Larger-than-Earth Terrestrial Planet.
- It can range from being a Solar Terrestrial Planet to being an Extrasolar Terrestrial Planet.
- It can range from being a Milky Way Terrestrial Planet (of which there may be more than 4 billion of them[1]) to being a Non-Milky Way Terrestrial Planet.
- Example(s):
- The Earth.
- Mars.
- Venus.
- Mercury.
- HD 219134b[1], (21 light-years away).
- Kepler-62f[2].
- Kepler-452b.
- …
- Counter-Example(s):
- a Terrestial Moon, such as The Moon.
- a Gas Giant Planet.
- See: The Milky Way, Kepler Spacecraft.
References
2013
- http://en.wikipedia.org/wiki/Terrestrial_planet
- 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 words for Earth (Terra and Tellus), as these planets are, in terms of composition, "Earth-like".
Terrestrial planets have a solid planetary surface, making them substantially different from the much larger gas giants, which are composed mostly of some combination of hydrogen, helium, and water existing in various physical states.
Astronomers at the Harvard-Smithsonian Center for Astrophysics (CfA) reported in January, 2013, that "at least 17 billion" Earth-sized exoplanets are estimated to reside in the Milky Way Galaxy.[1]
- 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 words for Earth (Terra and Tellus), as these planets are, in terms of composition, "Earth-like".
- ↑ 1.0 1.1 Staff (January 7, 2013). "17 Billion Earth-Size Alien Planets Inhabit Milky Way". Space.com. http://www.space.com/19157-billions-earth-size-alien-planets-aas221.html. Retrieved January 8, 2013.