Astronomers discovered a faint atmosphere around (612533) 2002 XV93 using a stellar occultation. The finding challenges current theories, as such small, cold bodies should not retain gas, hinting at recent activity like impacts or ice volcanism.Astronomers discovered a faint atmosphere around (612533) 2002 XV93 using a stellar occultation. The finding challenges current theories, as such small, cold bodies should not retain gas, hinting at recent activity like impacts or ice volcanism.
