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

Mercury, the smallest planet in the solar system, holds an outsized secret that some researchers believe could reshape how humans think about expanding into space. With an iron core that dominates its ...

Snapchat Planets, part of the Snapchat Plus Friend Solar System, ranks you in a friend’s top 8 based on your interactions, from Mercury (#1) to Neptune (#8). Each friend has their own solar system ...

Add Yahoo as a preferred source to see more of our stories on Google. An image of a fragment of Ksar Ghilane 022, a meteorite found in the Sahara Desert in 2023 which authors of a new study suspect ...

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

Mercury is the smallest planet in our solar system. Explore its size, extreme temperatures, core structure, and comparison with Pluto.

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

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