“These are objects that are in the graveyard of solar system formation,” explained Cornell University’s Jonathan Lunine, a Webb Interdisciplinary Scientist who will use Webb to study some of these targets. “They’re in a place where they could last for billions of years, and there aren’t many places like that in our solar system. We’d love to know what they’re like.”
By studying these bodies, Lunine and his colleagues hope to learn about which ices were present in the early solar system. These are the coldest worlds to display geologic and atmospheric activity, so scientists are also interested in comparing them with the planets.