Rubin Observatory Spots Possible Dwarf Planet Beyond Pluto—the Biggest in 20 YearsT2Covered by 1 source · first reported by Gizmodo at 28 Oct, 20:00 UTCThe distant, icy celestial body could be our solar system's sixth dwarf planet.SourcesT2Rubin Observatory Spots Possible Dwarf Planet Beyond Pluto—the Biggest in 20 YearsGizmodo28 Oct, 20:00