Since Pluto was relegated to dwarf planet status, almost everyone has agreed that there are eight planets in our solar system. However, it might be time to rewrite the textbooks.

Jupiter's rapid early growth dramatically reshaped our solar system, scientists now reveal. Its immense gravity acted as a ...

Not all of the solar system’s building blocks formed simultaneously. Some of the first solid bodies, or planetesimals, formed ...

Learn how many suns exist in the Milky Way and how to understand how many sun-like stars are out there could help us understand how many Earth-like planets there are, too.

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

PARIS (AFP) ― The solar system has at least two more planets waiting to be discovered beyond the orbit of Pluto, Spanish and British astronomers said. The official list of planets in our star system ...

For the study, the researchers made several remarkable and new discoveries: the two M-type stars that comprise the binary ...