Summer on Uranus lasts one long day equivalent to 42 Earth years. Uranus has eleven rings. The atmosphere of this planet is made of helium, hydrogen and methane. Methane absorbs red light and reflects blue light, thus Uranus looks blue to us.
Early in our solar systems creation, the asteroid belt would have been a treacherous space to cross. Only Jupiter's influence, as well as the inner planets, helped to clear the field of smaller debris.