Billions of years ago, something happened in our solar system that gave rise to one of the most peculiar planetary mysteries: What caused Uranus to spin on its side? Thumbnail credit: X-ray: NASA/CXO/University College London/W. Dunn et al; Optical: W.M. Keck Observatory 🚀 Follow Space.com Source:
Space Mysteries: Why is Uranus tilted on its side?
Source: VideoFromSpace
