The first telescope was invented around 1608, and Galileo turned one on the sky in 1609, discovering Jupiter's moons.
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In 1859, the Carrington Event caused powerful solar storms that disrupted telegraph systems.
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Saturn has dozens of known moons.
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The Voyager 1 spacecraft is the farthest human-made object from Earth and still communicates with us.
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Some galaxies appear distorted due to gravitational effects.
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Cosmic rays constantly bombard Earth from space.
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Black holes can bend time.
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Black holes can slow time so much that seconds near them equal years far away.
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The Sun makes up 99.8% of solar mass.
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