Yesterday morning I took part in a press briefing for NASA’s DART mission, which is set to test the space program’s planetary defense capabilities. On September 26, a NASA spacecraft will reach Didymos, a small asteroid that orbits its twin asteroid, Dimorphos. In my initial report last month, I said that NASA is blowing up an asteroid, but it turns out that’s not the case. Instead, the DART spacecraft will nudge the asteroid into a different orbit.
