Astronomers spot exomoon candidate that's almost as massive as Jupiter

Scientists may have found the first moon outside our Solar System – depending on what astronomers ultimately decide counts as one. Either way, the groundbreaking research, published in Nature this week, promises a path to clearer sightings of so-called exomoons. Kevin Hoy, a PhD student affiliated with Universidad Diego Portales and the European Southern Observatory in Chile, has found an object orbiting a brown dwarf, which in turn orbits a host star, which sits about 73 light-years from