Little is known about the tiny moon Helene other than its size (32 kilometers, or 20 miles) and its status as a Trojan moon of Dione (along with Polydeuces). All three moons share an orbit, but Helene lies 60 degrees ahead of Dione and Polydeuces lies 60 degrees behind Dione.
Published by Richard Leis
Richard Leis (he/him) writes poetry and fiction. He lives in Tucson, Arizona where he teaches workshops at The Writers Studio and works for HiRISE, a team at the University of Arizona with a camera in orbit around Mars. View all posts by Richard Leis