News in Brief
At least one of comet 67P/Churyumov-Gerasimenko’s dusty outbursts was the result of a landslide. But such changes to the surface of the comet haven’t radically altered its appearance, suggesting it has had roughly the same look for decades — or longer.
Images from the Rosetta spacecraft taken before its demise show what happened to the comet as it passed close to the sun in 2015. Cliffs...