A dying star is throwing a cosmic tantrum in this combined image from NASA's Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), which NASA has lent to the California Institute of ...

A new composite image of the Crab Nebula features X-rays from Chandra (blue and white), optical data from Hubble (purple), ...

New images show the rapidly rotating pulsar of the "Guitar Nebula" shooting out a gigantic cosmic plume of plasma, X-rays and ...

This Hubble image, captured with the Wide Field Camera 3, shows NGC 1866, a star cluster made up of hundreds of thousands of stars bound by gravity. The image shows two massive stars, WR 25 and ...