Uranus

Uranus is the seventh planet from the Sun.  It is commonly mistaken for a star.  Uranus and Neptune have a different atmosphere than those of the larger gas giants Jupiter and Saturn.  It's atmosphere is categorized as a ice giant, it is mainly composed of hydrogen and helium and ice that is composed of  ammonia, water and methane.  It is one of the coolest (and I do mean temperature) in the Solar System, -224 degrees Celsius.    

So is there life on Uranus that is the big question for all planets?  

No one knows because we (human) haven't been there personally.  We sent the Voyager spacecraft which provided us with alot of data.  The conditions are very different from Earth so if there was life, the organisms would most likely be very different as well.  Scientist have found that Uranus has a rocky core which are covered by a deep ocean of  water.  We all know water in an essential part of live.  So maybe there are organisms growth, living, reproducing, evolving and civilizing the planet Uranus.