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Due to iron oxide (rust) on its surface, ____ appears red.
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1. Mercury
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About 71% of ____ is covered by water.
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2. Venus
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Galileo observed the four largest moons of ____ in 1610.
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3. Earth
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____ has a spectacular ring system containing some of its moons.
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4. Mars
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Uranus and ____ appear blue due to methane in their atmospheres.
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5. Jupiter
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____ has extreme temperatures (800°F day vs -330°F night).
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6. Saturn
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____ and Neptune are about four times larger than the Earth.
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7. Uranus
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____ rotates so slowly that a day is longer than its year.
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8. Neptune
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