The James Webb Space Telescope has observed galaxies that formed just 300 million years after the Big Bang.
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Mercury has extreme temperature differences.
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The Earth's axis is tilted about 23.5 degrees.
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The Earth orbits the Sun at about 30 kilometers per second.
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The Moon's surface is covered in craters.
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The International Space Station orbits Earth roughly every 90 minutes.
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The Moon has no liquid water on its surface today.
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The Sun accounts for more than 99% of the mass of our solar system.
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