The universe is expanding in every direction at the same time.
Fact #2498
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In 1977, a mysterious signal known as the 'Wow! signal' was detected from space.
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Neptune is the farthest known major planet from the Sun.
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Comets orbit the Sun in elongated paths.
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Saturn could float in water because its density is low.
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Neutron stars can spin hundreds of times per second.
Fact #1597 · Space
Black holes can slow time so much that seconds near them equal years far away.
Fact #1790 · Space
Some exoplanets orbit two stars at once.
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The Hubble Space Telescope has captured deep images of distant galaxies.
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