Discover Snapchat Planets, the new Solar System feature on Snapchat+ that ranks your best friends as planets. Learn meanings, ...

There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

Our solar system is a smashing success. A new study suggests that from its earliest period—even before the last of its ...

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar System. Named 2023 KQ14, this rare “sednoid” follows an unusual orbit that ...

CAPE CANAVERAL, Fla. (AP) — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar ...

Astronomers have discovered a massive new solar system body located beyond the orbit of Pluto. The weird elongated orbit of the object suggests that if "Planet Nine" exists, it is much further from ...

Somewhere at the edge of the solar system a new Earth-sized world might be lurking, dubbed Planet Y. Astronomers have long proposed that there might be hidden planets beyond the Kuiper belt, a region ...