Turns out, the m (mu) ring is icy thanks to Mab, while the n (nu) ring has a surprising amount of carbon-rich material—hinting at mini-moons too faint for our current tech.
The recent find of a new moon (S/2025 U1) by JWST adds fuel to the theory that more hidden moons are waiting to be found.
A mission to Uranus could help answer questions about its mysterious rings and moons.