Scientists at the European Space Agency have made a surprising discovery about a dwarf planet in the outer reaches of the solar system: Quaoar has a dense ring around it, farther away from it than previously believed. This discovery was made using data from ground-based telescopes and the space-based telescope Cheops, when the planet blocked light from a distant star. Scientists and astronomers are now working to better understand the ring and its origin, as it could provide new insights into the formation of our solar system.