Among all the worlds circling our Sun, Uranus stands apart as a planet that chose to roll rather than spin, its axis tilted so severely that each pole endures forty-two years of unbroken daylight before surrendering to forty-two years of total darkness. This extreme orientation — nearly 98 degrees from vertical — produces seasonal forcing unlike anything else in the solar system, yet the planet's atmosphere responds to it on a schedule that defies simple prediction. We have visited this ice giant only once, in a brief flyby nearly four decades ago, and the most fundamental questions about how