Venus rotates in the opposite direction to most planets.
Why it is true
The planet spins from east to west, meaning the sun rises in the west and sets in the east, possibly due to a massive ancient collision.
Source: NASA
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.