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9 Cards in this Set
- Front
- Back
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Solar System
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The sun and all the bodies that orbit it.
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Revolution
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one full orbit of an object around another object.
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Axis
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an imaginary center line around which Earth rotates.
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Rotation
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one whole spin of an object around another object
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Space probe
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a spacecraft that gathers data without a crew
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Comet
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A frozen mass of ice and dust orbiting the Sun
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Asteroid
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a rocky mass up to several hundred kilometers wide that revolves around the Sun.
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Satellite
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an object in orbit around another object.
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Moon phases
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an indication of the fraction of the Moon that is illuminated as seen from Earth
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