The atmosphere of Uranus is made of the same sort of gases that we see coming out of cars on earth. There is also energy from lightning and ultraviolet light. Under these conditions it is believed that life may have begun on Earth. Eventually these conditions became unsuitable for life as we know it, however, because life adapted as the environment of the Earth changed. Thus, this environment sounds very unfriendly to life as we know it on Earth today. Read more about how life on Earth may have begun by reading about the Miller Urey experiment, linked at the bottom of this page, or take the Exploratour of Life on Earth.
The inside of Uranus is made of slushy water ice, but this interior environment possesses pressures as great as three million times the sea-level pressure on earth, and temperatures as high as 10,000 degrees. This interior environment sounds very unfriendly to life as we know it on earth today.
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