Our Solar System is a pretty calm place these days, all things considered, but that wasn’t always the case. In the period when the planets were still forming, collisions between various large bodies were common, and they ultimately helped shape the system that we see today. New research shows that Uranus, a chilly, hostile planet with a number of peculiar features, was the victim of a devastating impact during those early years, and it might explain some of the planet’s strange personality.