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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Mars had an oxygen-rich atmosphere around 4 billion years ago
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Jupiter is bigger than all the other planets combined.
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A comet's tail always points away from the sun.
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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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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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