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____ has a spectacular ring system containing some of its moons.
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1. Mercury
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Due to iron oxide (rust) on its surface, ____ appears red.
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2. Venus
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____ has the shortest orbit. A year is just 88 Earth days.
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3. Earth
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The presence of ____ was mathematically predicted in 1846.
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4. Mars
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The Great Red Spot on ____ is a massive persistent windstorm.
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5. Jupiter
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About 71% of ____ is covered by water.
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6. Saturn
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____ was the first planet discovered using a telescope (1781).
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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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