NASA’s DART spaceship on Monday struck the asteroid Dimorphos, in a test designed to ascertain whether a similar action could in future be used to deflect an asteroid or a comet that’s bound for Earth.
Video footage from the spacecraft and images of NASA’s ground control team responding to the direct hit were broadcast live online. The abrupt cancellation of DART’s radio feed, coupled with still images of the asteroid’s surface from very close range roughly one second before impact, served as evidence of it having hit its target at around 14,000 miles per hour (22,500 km/h).
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