Two Different Satellites Take Two Different Pictures of the Same Galaxy

What a difference a wavelength makes: On the left is the M82 Galaxy as seen in the visible light spectrum, captured by the Hubble Space Telescope — and the image we most associate with that galaxy. On the right is an x-ray image of the same galaxy, taken by NASA's Chandra X-ray Observatory. » 12/19/14 12:00am Today 12:00am

X-Rays From the Universe Are Simply Stunning

The Chandra X-ray observatory has been observing the universe in X-ray wavelengths for fifteen years. The space telescope's scientific highlights gallery has so much gorgeous X-ray goodness that it's hard to pick favourites. Need to be swept away by the sheer beauty of space? We've got you covered. » 7/28/14 8:41pm 7/28/14 8:41pm

Chandra Has Been X-Raying the Universe for 15 Years

When the Chandra X-ray Observatory celebrates a launch anniversary, it goes big with exploding stars and rotating neutron stars. Today marks 15 years of precision X-ray investigations of stars, galaxies, black holes, neutron stars, and even dark energy. NASA celebrates with supernova and pulsars. » 7/24/14 1:37am 7/24/14 1:37am

Galactic Cluster Collision Divides Ordinary Matter from Dark Matter

Almost six billion years ago, two of the largest gravitational structures in the universe slammed into each other with velocities in the millions of miles per hour. Galactic clusters are collections of galaxies (sometimes thousands of them) that seem to hang together in violation of the known laws of physics. Not only… » 8/29/08 8:00am 8/29/08 8:00am