There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
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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.
10
Mars had an oxygen-rich atmosphere around 4 billion years ago
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Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
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Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
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