Kepler-1625b and Kepler-1708b are Unlikely to Be Orbited by Large Exomoons, Astronomers Say

There are more than 200 moons in our Solar System, but their relatively small sizes make similarly sized extrasolar moons (exomoons) very hard to detect with current instruments. The best exomoon candidates so far are two nearly Neptune-sized bodies orbiting the Jupiter-sized exoplanets Kepler-1625b and Kepler-1708b, but their existence has been contested. In new research, astronomers…