Tilt of Uranus
Name: ken e hawley
Date: 1993 - 1999
Why is Uranus tilted so much on its axis?
This is one of the big mysteries in the solar system. It's probably
because Uranus was hit by something really big in its early history, knocking it
off it's old rotational axis (which would be expected to be in the same plane as
the orbit like most of the other planets).
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Update: June 2012