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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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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It 'snows' metal on Venus.
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