Some galaxies are moving away from us faster than the speed of light due to expansion.
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Mercury is the closest planet to the Sun.
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The James Webb Space Telescope observes distant galaxies in infrared light.
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Black holes can bend light through gravitational lensing.
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The light you see from some stars today began traveling before humans existed.
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Exoplanets have been discovered in habitable zones around distant stars.
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The Earth's atmosphere is layered into troposphere, stratosphere, and beyond.
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Jupiter is the largest planet in the solar system.
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The Earth's magnetic poles slowly shift over time.
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