'We haven't stopped exploring.' ...

Scientists may have discovered a new dwarf planet hiding on the edge of our Solar System, and it could be one of the largest ...

Object 2026 ED138 was spotted beyond Pluto using observations from the Vera C. Rubin Observatory, and scientists say it could be among the largest dwarf planets ever found.

Scientists with the U.S. National Science Foundation have identified a large object in the outer reaches of the solar system ...

Explore the scale of our solar system, from Earth and the Moon to the giant planets, Pluto, and the distant Oort Cloud. Discover how planetary sizes and distances compare, how long light takes to ...