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NASA rover, Perseverance, touches down safely on Mars

After 203 days and 293 million miles, NASA’s latest Mars rover landed safely on the Red Planet. After the usual “seven minutes of terror,” the rover became the fifth vehicle to land on Mars. It touched down in Jezero Crater…

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NASA to fly Ingenuity where no aircraft has been before—Mars

Ingenuity will attempt the first flight on another planet. The four-pound helicopter is strapped to NASA’s Perseverance rover. On Mars, the aircraft will perform a series of test flights to demonstrate if flight is possible. If the missions are a…

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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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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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