From spellbinding images to groundbreaking scientific discoveries, we look back on some of Hubble's most exciting milestones.

The James Webb Space Telescope has revealed a rare "Einstein ring," revealing two distant galaxies in an optical illusion ...

Recent flybys of the fiery world refute a leading theory of its inner structure — and reveal how little is understood about ...

Astronomers have discovered that super-Earth exoplanets are more common across the universe than previously thought. While it can be relatively easy to locate worlds that orbit close to their star, ...