Rubin Observatory Spots 2026 ED138, a Possible Dwarf Planet Beyond Pluto
The Vera C. Rubin Observatory has announced its first candidate dwarf planet: 2026 ED138, a trans-Neptunian object estimated at 600 to 1,500 kilometers in diameter, orbiting roughly 46 astronomical units from the Sun. If follow-up observations confirm a spherical shape, it would rank among the largest dwarf planets known in the outer Solar System. The … Read more