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

A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.

The fourth planet in the system is a rocky world, while the second and third ones are gas planets.

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: ...

An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

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

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

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Planetary scientists are ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different ...

Studying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while smaller planets tend to have more circular orbits. This split coincides with several ...