Astronomers may have found a moon orbiting a rogue planet with no star

Astronomers may have found a moon orbiting a distant rogue planet. While the planet doesn’t orbit a star, its moon may be close to the size of Earth and warm enough to have liquid water on its surface, a feature necessary for life as we know it.

Mary Anne Limbach at Texas A&M University and her colleagues performed a series of calculations to try to determine whether rogue planets would be good places to look for moons beyond our solar system, called exomoons. While there have been several tentative…