Earth is the only planet in our solar system that's not named after a god or goddess.
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On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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41% of the moon is not visible from earth at any time.
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Astronauts cannot burp in space.
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