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Mysterious moonquakes: A fresh look at Apollo-era tremors

People have long assumed that the moon is geologically dead. After all, our natural satellite lacks the internal heat needed for tectonic activity. Right? But new analysis of data recorded by seismometers during the Apollo era is shedding light on…

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Amphipod Measuring 7.8 Millimeters In Length

Into the deep: The effect of human activity miles below sea level

Marine scientists who studied crustaceans from three Pacific Ocean trenches, including the Mariana Trench, have discovered the depth of the influence of human activity on ocean ecosystems. Shrimp-like amphipods feeding at the bottom of the trenches were found to have…

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Yes, the universe is expanding. But how fast?

Astronomers agree that the universe is growing larger, and that the rate of expansion—called the Hubble constant—is accelerating. What they don’t agree on is the best way to measure that expansion rate. Current methods have produced numbers that don’t align.…

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