Umbriel will be the darkest of Uranus’ greatest moons. It reflects only 16 % of the light that strikes its area, a characteristic similar to the highland areas of Earth’s moon. Cassini wasn’t designed to sample the water, but the discovery impressed scientists to acquire new missions on the outer https://johnnyehhff.total-blog.com/the-definitive-guide-to-best-moons-60003183