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

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

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, ...

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

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

What can rocky planets orbiting in the outer parts of a solar system teach scientists about planetary formation and evolution? This is what a recent study | Space ...

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

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

Far beyond Neptune, in the frozen depths of the Kuiper Belt, many ancient objects oddly resemble giant snowmen made of ice ...

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

Astronomers have been on the hunt for a theorized ninth planet in the extreme outer solar system, and now a study suggests there might be another planet out there. Unlike the massive (and completely ...