This icy world, temporarily named 2017 OF201, could be a distant cousin of Pluto — and scientists mean "distant" quite ...

A newly detected planet beyond Pluto is not just expanding our understanding of the Solar System, it might be quietly rewriting it. Astronomers from the University of Taiwan recen ...

Astronomers have discovered a mysterious dwarf planet, 2017 OF201, far beyond Pluto. This discovery challenges existing ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

but how was this new possible planet discovered? The study says it arises from anomalous patterns in the Kuiper Belt, an icy region beyond Neptune. The body appears in two historical images ...

There’s a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic ...

Space may be the final frontier, but for newcomers to Star Trek: Strange New Worlds, the journey begins right here on Earth.

A US-based trio hunting this elusive world has stumbled on what appears to be a new dwarf planet in the solar system's outer ...

The researchers called it one of the most distant visible objects in our solar system, and said its existence indicates that a vast expanse of space beyond the outermost planet Neptune and a region ...

Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show opening to the public on Monday.

Cheng, together with graduate students from Princeton University, discovered the potential dwarf planet while searching for ...