Astronomers say Saturn’s moon Iapetus may have once had a mini-moon all its own
Call it moonception, if you’d like. Astronomers say that a moon-with-a-moon scenario could explain some of the strange features of Iapetus, the third-largest of Saturn’s 62-known moons. Iapetus was first discovered over three-hundred years ago by astronomer Giovanni Domenico Cassini, but it wasn’t until 2004, during NASA’s Cassini mission to Giovanni’s namesake, that astronomers noticed…
