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That is fun!
Stuff I learned this year listening to Universe stuff on the internet:
1. Venus rotates backwards and very slowly (walking speed): 1 rotation for every two orbits
(correction: 2 days every year; its orbit is about equal to it's rotational period)
2. Uranus lies on its side, rotating up and down, meaning the sun rises and sets north to south or vice versa
3. Mercury has ice at the poles even though it is on average only 35 million miles from the sun.
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