By tracking individual stars and exploding supernovas, astronomers discovered the strength of early ultraviolet glow ...

The moon will briefly hide Regulus in a dramatic occultation visible across parts of the eastern U.S.

A mysterious cosmic explosion has astronomers buzzing, as a strange event may hint at an entirely new kind of stellar ...

The sun is an incomprehensibly gigantic, constantly roiling nuclear furnace—but some days are even busier than others. Based ...

James Webb data reveal pristine gas irradiated by energetic light some 450 million years after the Big Bang — a sign it may ...

In the new images, the nebula’s buckyballs are prominent, concentrated in the spherical shell immediately around the central ...