NASA just redirected an asteroid by smashing a spacecraft into it | Live Science

NASA has intentionally slammed a spacecraft into an asteroid in the first ever test of Earth’s planetary defense system.

NASA’s Double Asteroid Redirection Test (DART) spacecraft smashed into the asteroid Dimorphos at 7:14 p.m. ET on Monday (Sept. 26) in humanity’s first attempt to alter an asteroid’s trajectory. NASA believes the impact will be a vital demonstration of how humans could one day nudge a dangerous asteroid away from a catastrophic collision course with our planet. 

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