Black holes can merge and release enormous energy.
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The Sun will eventually expand into a red giant.
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Asteroids vary widely in size and composition.
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There are black holes at galaxy centers.
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There are rogue planets drifting through space with no star at all.
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The Voyager Golden Record was sent into space containing sounds and images from Earth.
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Comets can develop long tails when near the Sun.
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The Moon always shows the same face to Earth.
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The Earth's rotation slightly bulges at the equator.
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