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

Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

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

LHS 1903 flips rock and gas on their heads, hinting that late-born planets can rewrite the rules around common red dwarfs for now.

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

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

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

In our Solar System, the inner planets (Mercury to Mars) are rocky, and the outer planets (Jupiter to Neptune) are gaseous.

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

Add Yahoo as a preferred source to see more of our stories on Google. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky ...