Resumen de Cast-off moons doomed to roam the cosmos
The universe may be awash with wandering, rejected moons, expelled from their planets' orbit long ago. Nobody has ever conclusively seen a moon orbiting a planet in another star system. While their small size and great distance makes them tough to find, it is also possible that there just aren't very many out there anymore. Sean Raymond at French national research agency the CNRS in Paris and his colleagues used simulations to figure out what happens to moons as their planets are still forming.
