Astronomers have spotted something remarkable hiding in the depths of the Milky Way—a nearly perfect circle formed from the debris of an exploded star. Known as Teleios, from the Greek word meaning ...

A telescope similar to James Webb was launched in the orbit by NASA in 2025 to look for phenomena that the most powerful tool ...

Here's when and where to look for the best chance of seeing Noctilucent, 'night shining' clouds in summer 2025.

Somewhere in our galaxy are engines capable of driving atomic fragments to velocities that come within a whisker of ...

Our results show that insoluble Fe in dust particles readily dissolves under acidic conditions relevant to wet aerosols. By contrast, under the higher pH conditions generally relevant to clouds, Fe ...