A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

Astronomers have discovered a new world circling the outer edges of our solar system. So far, there are only four known ...

The Solar System is a vast and mysterious realm, filled with planets, moons, asteroids, and icy bodies waiting to be ...

Trans-Neptunian objects (TNO) are some of our solar system's lesser-known objects. They number in the thousands, and they get ...

If it weren't for the new budget, New Horizons could keep exploring the outer reaches of the solar system into the 2030s.

Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

Astronomers discover Ammonite, a rare icy object beyond Pluto, challenging Planet Nine theory and offering clues to the solar system’s ancient origins.

NASA launched New Horizons to explore Pluto. In 2019, it visited the furthest object in the Solar System we have seen up ...

Researchers use the Subaru Telescope in Hawaii to find a small object on the outer edge of the Solar System. Nicknamed ...