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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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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Earth is the only planet in our solar system that's not named after a god or goddess.
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From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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The light hitting the earth right now is 30 thousand years old.
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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NASA invented baby food as we know it today.
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