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 ...

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

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

The PRIMA space telescope would observe the cosmos in far-infrared light, while AXIS would be an orbiting X-ray detector.

Brian Greene (Cosmic String Theory) and Astrophysicist Ethan Siegel have collaborated on a National Geographic coffee-table ...