New evidence shows that, far beyond Pluto, there may exist a hypothetical planet referred to as Planet X or Planet Nine.

This gas cloud located 500 light years away from our solar system is about to become a planet.This process usually takes a ...

Perhaps it's time to rebrand.

A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

TRAPPIST-1e, an Earth-sized world in the system’s habitable zone, is drawing scientific attention as researchers hunt for ...

Fresh simulations show there is a chance Uranus and Neptune might actually be rock-rich worlds wrapped in thinner icy layers.

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

The most convincing evidence to date of a dense atmosphere around a rocky planet outside the solar system has been found in ...

A 'thick blanket of gas' over the distant planet is reshaping what scientist believed to be true.

Fresh JWST data and new models challenge methane hints on TRAPPIST-1e, showing the gas would be rare, unstable, and difficult ...

After a year-long renovation, the Michigan Science Center reopened its planetarium Friday, showcasing technology upgrades and ...

Learn what the first maps of the sun's atmospheric boundary reveal about solar wind and its escape into space.