Didymoon seen from Didymos

With its proposed Hera mission, ESA hopes to visit double asteroid Didymos. Hera will get close to the smaller of the two asteroids, Didymoon, an artistic rendering of which is shown in this image. Hera’s up-close observations will help prove whether asteroids can be deflected, so that if an asteroid ever poses an impact risk to planet Earth, we’ll be ready.

This artist’s impression is taken from the video Hera: ESA’s Planetary Defence Mission.