ESA's Hera Will View Asteroid Scars from DART's Strike

Hera Mission Prepares for Follow-Up Asteroid Imaging The ESA spacecraft will capture results of a planetary defense test The ESA spacecraft will capture results of a planetary defense test David Dickinson is a freelance science writer and long-time sky watcher. A rendering of Hera shows the spacecraft approaching the Dimorphos asteroid, with a portion of the larger Didymos asteroid on the left. In November and December, Hera will acquire baseline measurements of the asteroids from 25 to 30 kilometers away.