For 20 years, the Chandra X-ray Observatory has been our X-ray eye in the sky. NASA released new images captured by the space telescope this week to celebrate its two decades in space.

The Chandra X-ray Observatory marked its 25th anniversary with a release of never-before-seen images. But budget cuts may cause the observatory’s days to be numbered.

Launched aboard the Space Shuttle Columbia in July of 1999, the Chandra X-ray Observatory is the most capable space telescope of its kind. As of this writing, the spacecraft is in good health and i… ...

Launched aboard the Space Shuttle Columbia in July of 1999, the Chandra X-ray Observatory is the most capable space telescope of its kind. As of this writing, the spacecraft is in good health and ...

STUNNING: NASA released 25 never-before-seen images - including the 'Pillars of Creation,' Cat's Paw Nebula and more - to celebrate the 25th anniversary of its Chandra X-ray Observatory.

STUNNING: NASA released 25 never-before-seen images - including the 'Pillars of Creation,' Cat's Paw Nebula and more - to celebrate the 25th anniversary of its Chandra X-ray Observatory.

To celebrate the 25th anniversary of the flagship Chandra X-ray observatory, NASA released a behind-the-scenes look at the work it takes to keep the $1.5 billion telescope flying in space.

A flagship NASA space telescope remains on course to return to action next week. A balky orientation-maintaining gyroscope sent the Chandra X-ray Observatory, which has been observing the heavens ...

NASA's Chandra X-ray Observatory has revealed hundreds of supermassive astronomical black holes that are millions or even billions of times the mass of the Sun, according to a new study.