‘Rail cars’ of material released after NASA spacecraft hit asteroid

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When NASA’s Double Asteroid Redirection Test spacecraft slammed into the tiny asteroid Dimorphos, the impact certainly left a mark.

The intentional collision, which took place on September 26 as a test of asteroid deflection technology, displaced more than 2 million pounds (1 million kilograms) of rocks and dust from the asteroid into space. Scientists estimate it was enough material to fill about six or seven rail cars.