Some 8,000 light-years away, a moon has been discovered—possibly the first one outside our own solar system. Dubbed an “exomoon,” the “Neptune-sized” gassy object, which orbits a “Jupiter-sized” planet, was spotted by Columbia University astronomers via the Kepler and Hubble space telescopes. It’s “unlike anything scientists have seen before, and even if this turns out to be a false find, the experience has offered valuable insight on how to find a possible moon by surveying the planet first. Learn more at the Washington Post.
Neptune-Sized Moon Discovered Outside Our Solar System