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

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

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

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 ...

Scientists may add a new dwarf planet to the official roster of our solar system. The distant, icy body, provisionally dubbed ...

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.