WASHINGTON( Reuters)-When NASA sent its DART spacecraft to slam into the asteroid Dimorphos in 2022, the U.S. space agency demonstrated that it was possible to change a celestial object's trajectory, if needed, to protect Earth....
Dimorphos and Didymos do not pose an actual threat to Earth. The spacecraft collided on Sept....
It now takes Dimorphos 11 hours, 22 minutes and 3 seconds to complete an orbit, 33 minutes and 15 seconds less than before the impact, they found....
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星报-世界
2024-03-20 00:00:00.0