Uranus is the third largest gas giant in the solar system. It is extremely cold at -370 degrees Fahrenheit due to its distance from the sun of over 2.8 billion kilometers. While Uranus contains water, it is entirely frozen solid. The atmosphere is composed primarily of hydrogen and methane gases, and it may occasionally rain diamonds deep within the planet due to the pressure. Life would be impossible on Uranus due to the frigid temperatures, lack of solid surface, and absence of plants.