What is so unusual about the motions of venus and uranus

Answer

Uranus was discovered by the astronomer William Herschel in 18th century. Uranus atmosphere mainly consist hydrogen and methane gas.

the unusual thing about Uranus is that it is tilted almost 90 degrees and lies on its side because scientist explained that It was hit by a massive planet and it tipped it over.

Venus is the second planet in our solar system. Venus is the  planet which do not have moon around it. In Venus sun rise in the west and set in the east because of it has retrograde rotation. Air in Venus is carbon dioxide and acids.