Massive stars have an outsized influence on their environment and the galaxies they call home. These behemoths have the highest surface temperatures of any normal stars, so they emit copious amounts ...

The interstellar visitor may still have a few things to tell us before it leaves our solar system.

Deneb, Vega and Altair are among the brightest stars in the night sky.

A new high-resolution map of distant galaxies may help scientists understand a mysterious invisible substance that helps hold the universe ...