A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

Artist impression of the planetary system with four planets,around a small red star,called LHS1903. Caption: Astronomers have long thought solar systems follow a simple pattern similar to our own: ...

Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.

Astronomers have found a rocky planet where it should not exist, orbiting far from a cool red star. Could this strange ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

New studies offer a clearer picture of how the outer solar system formed and evolved based on analyses of trans-Neptunian objects (TNOs) and centaurs. The findings reveal the distribution of ices in ...

We know that our Solar System is not the blueprint for all planetary systems out there. There are gas giant planets orbiting ...

A "domino effect" may occur in star systems whereby newly formed planets close to a star help shepherd dust and gas to create more planets farther out in the system. Astronomers using a mountain ...

The discovery provides new insights into the question, 'how large can a planet be?' An illustration of the HR 8799 system with three of its gas ...