Xeraxth

Xeraxth is a planet (also called the gas moon) that orbits around one of the gas giants in our solar system, Jupiter. Its atmosphere is mostly composed of hydrogen and helium. The planet has a core made out of iron, rocks from Jupiter, and oceans of liquid mercury. The planet is basically just a core with gas around it. But the cool thing about Xeraxth is that there are gigantic rocks floating around in the atmosphere of the planet, it’s possible because of the weak gravity and the thick gas surrounding it. You’ve probably might guessed that there is no life on Xeraxth, the reasons are: the atmosphere is too thick, it’s pretty damn cold, there is no water - only small oceans of mercury - and its inhabitants would be extremely vulnerable to solar radiation. 

The planet was discovered in 2002. At first Xeraxth wasn’t really interesting enough for NASA to investigate it further, so they found it and then left it alone. But that changed when the robotic spacecraft named I.R.O.Y.C.W.M.J came closer to this planet (which they called the ‘boring’ moon of Jupiter) on July 5th, 2008. The spacecraft was meant to explore Jupiter but the plans were changed when NASA saw the footage of Xeraxth. The planet is now very well known amongst the people of NASA.