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7 Cards in this Set
- Front
- Back
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Dwarf Planets |
-Orbits a star, large enough to have its own gravity and has cleared objects orbital path -Has not cleared ALL objects from orbital path -Includes Pluto, Eris, Makemake, Haumea, Ceres |
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Pattern of Motion among Large Bodies |
-All orbits are nearly circular and lie in the same plane -Orbit the Sun in the same direction -(Most) Rotate the same direction with fairly small axis tilts -(Most of the) Large moons orbit in their planet's equatorial plane in the same rotation direction |
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Kuiper belt of comets |
Orbit beyond Neptune in the same plane and direction as the planets |
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Oort Cloud of Comets |
Very far from the Sun and do not show any simple patterns in their orbits |
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Exceptions to the Rules of Solar Systems |
-Uranus and Pluto rotate nearly on their sides and Venus rotates backwards from other planets -Small moons can have unusual orbits -Earth has an extremely large moon |
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How old is the solar system? |
4.6 billion years old |
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How many planets outside of this solar system have been discovered? |
600 |
