Archived observations appear to show a moving object in the far-distant outer solar system, but its reality is unclear ...

Astronomers have found a possible new dwarf planet beyond Pluto. And the remarkable thing is that they’d been photographing ...

Rubin Observatory has spotted a distant world beyond Pluto as its decade-long survey begins revealing the hidden solar system ...

NSF–DOE Vera C. Rubin Observatory has found a large object that scientists have identified as a possible dwarf planet. A ...

Astronomers using the Vera C. Rubin Telescope discovered a possible new dwarf planet that, if confirmed, could join 5 others ...

Lying beyond Pluto, 2026 ED138 could be as large as 1,500 kilometers in diameter. Astronomers are still working to confirm ...

ED138, a newly discovered dwarf planet candidate, could join a group of only five other recognized objects that includes our ...

In short, a regular planet has enough gravitational pull to clear out the space around it, whereas dwarf planets do not.

The object, known for now as 2026 ED138, is one of the first discoveries by the new Vera C. Rubin Observatory in Chile.