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

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

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

New research from Rice University suggests that the giant planet Jupiter reshaped the early solar system in dramatic ways, ...

For the first time, astronomers have witnessed the early stages of planet formation around a distant young star, HOPS-315, ...

Webb just spotted a carbon-rich moon factory 625 light-years away, revealing how moons like ours may have first taken shape.