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You are here News Science NASA crashes spacecraft into asteroid in a mission to demonstrate a technology that might protect Earth

NASA crashes spacecraft into asteroid in a mission to demonstrate a technology that might protect Earth

NASA crashes spacecraft into asteroidNASA managed Monday to crash a small spacecraft directly into an asteroid, a 14,000-mile-per-hour collision designed to test whether such a technology could someday be deployed to protect Earth from a potentially catastrophic impact.

The violent end of the Double Asteroid Redirection Test (DART) spacecraft thrilled scientists and engineers at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., which operated the mission under a NASA contract.

The asteroid, Dimorphos, is the size of a stadium — or the Great Pyramid of Giza, as one scientist put it Monday — and is about 7 million miles from Earth at the moment. It orbits a larger asteroid named Didymos. Neither poses a threat to our planet now or anytime in the foreseeable future.

This was just a test, NASA’s first demonstration of a potential planetary defense technique, called a kinetic impactor. The idea is to give a hypothetically dangerous asteroid just enough of a blow to alter its orbital trajectory.

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