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14 Cards in this Set
- Front
- Back
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planet |
a large, round object that revolves around a star and has cleared the region around its orbit |
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revolution |
one full orbit around the sun |
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axis |
an imaginary line around which object spins |
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constellation |
a group of stars that forms a pattern |
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orbit |
the path an object takes as it revolves around a star, planet, or moon |
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rotation |
one whole spin of an object on its axis |
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solar flare |
an explosive eruption of waves and particles into space |
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inner planet |
any of the four closest planets to the sun |
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outer planet |
any of the four planets in our solar system beyond Mars |
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comet |
a frozen mass of different types of ice and dust orbiting the sun |
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dwarf planet |
a large, round object that revolves around the sun but has not the region around its orbit |
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moon |
a natural object that revolves around a planet |
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asteroid |
a rocky mass made up to several hundred kilometers wide that revolves around the sun |
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space probe |
a space craft that gathers data with out a crew |
