Found Year: 2021 NASA is the one who discovered it. Place: Not specified A moon circling a moon, sometimes referred to as a moonmoon or submoon, is an imaginary natural satellite that revolves around a planet's moon. Although none has been found yet, theoretically, submoons could exist. Drs. Raymond and Juna Kollmeier of the Carnegie Institution of Washington Observatories investigate the possibility of a submoon. A Moon Together With A Moon ©Alamy/World History Archive They claim that, at least in theory, a small number of known moons, including Callisto, Titan, Iapetus, and the Moon, are capable of supporting long-lived submoons. "Despite the fact that none have been discovered yet, Callisto appears to be a satellite that could host its own satellite," they disclosed.
