Astronomers Find First Moon Outside Our Solar System

Using a powerful telescope in Chile, astronomers detected a giant moon orbiting a failed star in the CD-35 2722 system, published in Nature on 22 July 2026. The moon is at least as large as Jupiter. If confirmed, it would be the first known moon beyond our solar system. Researchers call it an "exosatellite," sparking debate over what counts as a moon.