This video of the plume was captured by astronomers at the Les Makes Observatory in Le Reunion, a French island in the Indian Ocean. “Something like this has never been done before, and we weren’t entirely sure what to expect,” Marco Micheli, an astronomer at ESA’s Near-Earth Objects Coordination Centre, said in a press release. “It was an emotional moment for us as the footage came in.” At the time of the impact, Didymos was only visible to observatories in the Southern Hemisphere.