CGI simulation of an asteroid impact on Earth.

NASA’s Double Asteroid Redirection Test (DART) spacecraft is hurtling toward the asteroid Didymos and its moonlet Dimorphos, and it’ll reach its target tonight (Sept. 26). At 7:14 p.m. EDT (2314 GMT), if all goes well, DART will crash into Dimorphos in an attempt to alter the moonlet’s trajectory. The mission is meant to test the theory that this technique could be used to divert an asteroid heading straight for Earth. While neither Dimorphos nor Didymos pose a threat to our planet, and nothing

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