Astronomers have long wondered why Uranus “lies on its side” with an obliquity of 98 degrees. One theory that a giant impactor tipped Uranus over has been challenged. A paper accepted by the Planetary Science Journal proposes the intervention “driven by the outward migration of an as-yet undetected outer Solar System body commonly known as Planet Nine”.
Read more here: https://arxiv.org/abs/2207.11823
Food for thought as we anticipate a well placed apparition of this ice giant coming up, with opposition in November in Aries.