Astronomers have long believed that planetary systems follow a familiar blueprint. Small rocky planets ...

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

Astronomers studying a dim red dwarf star called LHS 1903 have found a four-planet system with an architecture that defies the standard rules of how rocky worlds take shape. The outermost planet in ...

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

New research using NASA’s James Webb Space Telescope examines the maximum sizes of gas giant exoplanets, measuring chemical compositions and formation processes in the HR 8799 system.

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

Scientists have identified a rocky outer planet in a system where a gas giant was expected. The discovery challenges ...

In a stellar nursery 460 light-years away, astronomers sharpened old ALMA data and spotted crisp rings and spirals swirling around 27 infant stars—evidence that planets start taking shape just a few ...

A new machine learning model has predicted that there are 44 Earth-like planets in other star systems in the Milky Way galaxy, with researchers from Switzerland claiming that the algorithm at the core ...