Arnaud Bourdoux, Software Project Manager for the Hera mission, tells us about his two favourite asteroids - one is on its way to us, the other we will soon visit.

Asteroids can tell us about the origins of the Solar System and maybe even life itself, but they also pose a risk to Earth as many graze past our planet on a regular basis. Find out more about what ESA is doing to protect us through its Planetary Defence Office, part of the Space Safety programme.

Access the other "Asteroid Day selfies"