Artist's impression of the exoplanet Kepler-1625b with the candidate exomoon orbiting it. Image: Dan Durda
Evidence for a moon outside our solar system - space science news

For the first time, astronomers have obtained compelling evidence for the existence of an “exomoon”, a moon outside our solar system. It is orbiting the planet Keppler 1625b, and is unusual because of its big size, roughly that of the planet Neptune. Unlike exoplanets, exomoons have not been observed until today, and even the evidence obtained in the current study needs further validation. If confirmed, the finding of the exomoon could shed light on the development of planetary systems, and on the question of how moons are formed around planets.

Read the full story: Columbia University New York
Scientific publication: Science Advances