There are estimated to be 2 trillion galaxies in the observable universe.
Fact #10385
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Neptune is known for its deep blue color.
Fact #94 · Space
Venus rotates in the opposite direction of most planets in our solar system.
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Venus is sometimes called Earth's sister planet.
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Saturn's largest moon is Titan.
Fact #271 · Space
The Moon has lower gravity than Earth.
Fact #254 · Space
The Apollo 11 mission successfully landed humans on the Moon.
Fact #1017 · Space
The Moon slowly moves away from Earth by a few centimeters each year.
Fact #11 · Space
Black holes can slow time so much that seconds near them equal years far away.
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