A comet on a comet? That’s what it looks like, but you’re witnessing the most dramatic outburst ever recorded at 67P/Churyumov-Gerasimenko by the Rosetta spacecraft. The brilliant plume of gas and dust erupted on July 29 just two weeks before perihelion. In a remarkable display of how quickly conditions on a comet can change, the outburst lasted only about 18 minutes, … Continue reading Dramatic Outburst at Rosetta’s Comet Just Days Before Perihelion