Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.

“Thanks to our results, we know that the proto-Earth was initially a dry rocky planet,” says Kruttasch. “It can therefore be ...

Earth is far from the only celestial body in the Solar System.

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation ...

The most elusive planetary aurora in the Solar System has finally been revealed in all its gently glowing glory. Far from the ...

New simulations suggest sub-Neptune planets may be drier than thought, challenging the "water world" hypothesis and reshaping ...

Fast-forward to today: we’ve gone from one lonely planet to a catalog of thousands. The pace is accelerating. In 2015, NASA’s ...

The long-standing idea of planets forming in perfectly flat, orderly discs has been challenged by new research. Instead of calm, pancake-shaped structures of dust and gas, astronomers have now ...

Early Earth lacked life’s essentials until a collision with Theia added them. This chance event made life possible. After the Solar System formed, it took no more than three million years for the ...