Why is a day on Venus longer than its year?

The answer

Venus rotates so slowly that one full rotation (a Venusian day) takes 243 Earth days, while its orbit around the Sun (a Venusian year) takes only 225 Earth days. Making things even stranger, Venus rotates in the retrograde direction - opposite to most planets - so the Sun rises in the west and sets in the east. Scientists believe a massive ancient collision may have flipped and slowed Venus's rotation. As a result, if you could stand on Venus, you would experience only about two sunrises per year.