NASA's DART mission tests planetary defense strategy by colliding with asteroid

DART's impact on Dimorphos is not expected to have any effect on Earth.

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NASA's DART spacecraft has collided with the asteroid moonlet Dimorphos, marking the first-ever attempt to knock a space rock off course.

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DART met up with Didymos and Dimorphos near their closest approach to Earth.

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DART is the world’s first test of a strategy for planetary defense.

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DART's successful test was celebrated by the mission control rooms.

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