Chandra

Scientists have measured how fast a supermassive black hole is spinning, and the result might give us a clue about how the giant formed.

The Chandra X-ray Observatory has found growing intermediate-mass black holes in over two dozen galaxies.

Scientists have spotted a cluster of rapidly growing black holes that offer a glimpse at something called "cosmic noon."

A prolific NASA space telescope has closed its camera eye for now due to a power issue that has stalled the observatory's science work.

An enormous, ghostly hand stretches through the depths of space, its wispy fingers pressing against a glowing cloud. It sounds like something out of sci-fi, but it's quite real.

Young stars can release flares more powerful than our sun's largest on record once a week, according to a massive new analysis of stellar activity.

The more scientists study it, the weirder Uranus gets.

NASA's Chandra X-ray Observatory has discovered the remains of a rare kind of stellar explosion near the center of the Milky Way.