A Lonely Ice Giant: Discovering 2017 OF201 in the Outer Reaches of Our Solar System
Astronomers discovered 2017 OF201, a distant dwarf planet candidate with a highly elongated orbit reaching the inner Oort Cloud. Its unusual path and large size suggest a hidden population of similar objects. The discovery challenges the Planet X hypothesis, as 2017 OF201's orbit does not fit the expected clustering pattern and would be unstable if such a planet existed.