Mount St. Helens' 1980 eruption released energy equivalent to 26,000 Hiroshima atomic bombs.
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The Wow! signal was a strong radio signal detected in 1977 that has never been fully explained.
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The Earth's rotation slightly bulges at the equator.
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Black holes can slow time so much that seconds near them equal years far away.
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The Earth's gravity affects the movement of tides.
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Black holes can bend time.
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Some stars appear to dim irregularly for reasons that are still studied.
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Neptune appears blue because of methane in its atmosphere.
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The James Webb Space Telescope observes distant galaxies in infrared light.
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