The Sun will eventually expand into a red giant.
Fact #111
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The universe is estimated to be about 13.8 billion years old.
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The Pioneer 10 spacecraft was the first to travel through the asteroid belt.
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Black holes can slow time so much that seconds near them equal years far away.
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The Oort Cloud is a theoretical shell of icy objects surrounding the solar system.
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The Milky Way is estimated to contain hundreds of billions of stars.
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The Milky Way contains regions of active star formation.
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Time moves slower in stronger gravitational fields.
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The Milky Way and Andromeda galaxies are on a slow collision course.
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