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

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

Analysis of an ancient meteorite suggests that rocky planets both near and distant from the sun may have formed at the same ...

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

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

Astronomers have observed a planetary system that challenges current planet formation theories, with a rocky planet that ...

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

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 ...

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

Astronomers have discovered seeds of rocky planets forming in the gas around the baby sunlike star providing *** peek into the start of our own solar system. The the thing that we've discovered is ...