Rogue planets drift through space without orbiting a star.
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Black holes can bend light through gravitational lensing.
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The Milky Way is estimated to be over 100,000 light-years wide.
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Black holes can slow time so much that seconds near them equal years far away.
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The Earth's magnetic field helps prevent atmospheric loss.
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Some galaxies contain supermassive black holes millions of times the Sun’s mass.
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The Bell Labs experiment led to the discovery of the cosmic microwave background.
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Space smells like burned metal.
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Mercury has extreme temperature differences.
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