Observations Together with the Hubble Space Telescope also indicate Europa features a tenuous atmosphere of oxygen. The combination of h2o, a heat source, and an environment raises the chance that Europa harbors lifetime. Kerberos was identified in 2011, and Styx was located in 2012, both equally by Hubble Place Telescope. https://best-moons06047.full-design.com/the-smart-trick-of-moons-that-nobody-is-discussing-77102782