In 2006, the Hubble Space Telescope caught a rare view of an eclipse on Uranus. Uranus has an extremely strong magnetosphere. Its atmosphere is comprised mostly of hydrogen and smaller amounts of helium and methane. Further, it averages around 2,870,972,200 kilometers (1,783,939,400 miles) from the Sun. And while its atmosphere is extremely cold, experts estimate that the oceans can reach a temperature as high as 4,200 degrees F (2,300 degrees C).