21 April 2010, 09:48 AM ET
NASA's Swift satellite detected its 500th gamma-ray burst on April 13, in an explosion in the Cassiopeia constellation.
25 March 2010, 02:06 PM ET
When two massive galaxies collide, they may form quasars, which are regions around giant black holes where matter is gobbled up and light is flung back into space.
12 February 2010, 01:00 PM ET
The backward spin of some black holes could create mysterious jets of plasma that control the fate of galaxies
28 January 2010, 01:55 PM ET
Small black holes mysteriously self-regulate, just like their supermassive cousins.
27 January 2010, 05:45 AM ET
A stellar-mass black hole strips material from its companion as they circle each other.
06 January 2010, 06:49 AM ET
New Chandra X-ray Observatory images and computer models show why the Milky Way black hole is starving.
21 December 2009, 08:21 AM ET
Mysterious dark matter may have helped the earliest stars shine.
18 December 2009, 10:25 AM ET
Super-powerful galactic overlords rearrange the contours of space itself in their local neighborhoods. Their blast-waves heat up - and hollow out - hundreds of thousands of light years of interstellar space.
18 December 2009, 10:18 AM ET
Which came first: Galaxies? Or the big black holes at their centers? Evidence from the Hubble Space Telescope's Deep Field images is persuasive.
17 December 2009, 11:42 AM ET
Humans may escape the death of their planet. But where do you run, in a universe where everything is expanding away from everything else?
17 December 2009, 11:41 AM ET
Another word for "time" is "change". When transformation stops, time ceases. Calculating the death date of the last black hole, which marks the end of Everything.
15 December 2009, 11:22 AM ET
Astronomers have estimated more precisely the distance to a black hole, finding the gravity well is much closer to us than assumed.
08 December 2009, 09:35 AM ET
The biggest black holes in the universe are also the most perplexing. Scientists have long been confused about just how the earliest, most massive black holes formed, but new evidence now suggests they could have originated inside giant cocoon-like stars.
02 December 2009, 05:49 AM ET
A flash of nearly 13 billion year-old light - discovered only recently by new astronomy techniques - reveals how the Universe has distributed ever more intricate elements throughout its history.
30 November 2009, 04:47 PM ET
Astronomers have long wondered which came first, the black hole or the galaxy around it. The leading theory holds that the two co-evolve, starting small and building over time.
24 November 2009, 09:58 AM ET
Supernovas make metals out of simpler elements. But it takes supermassive black holes to deliver them to the Cosmos. So, amazingly, these monsters are directly responsible for creating us.
10 November 2009, 05:29 PM ET
Black holes usually come in either the little or big variety, but astronomers have found new evidence that middleweight black holes exist too.
09 November 2009, 11:31 AM ET
Black holes — extremely dense masses jammed into single points of space — pack quite an energy punch, releasing some of the most powerful radiation in the universe.
03 November 2009, 09:31 AM ET
Quasars used as signposts to measure positioning of GPS satellites.
27 October 2009, 01:03 PM ET
Researchers have simulated a mini black hole in the lab, though luckily not the kind that could swallow up the Earth.
13 October 2009, 09:14 AM ET
Hubble telescope photographs energetic galactic collision.
22 September 2009, 02:47 PM ET
New photographs of the center of the Milky Way reveal the chaotic environment at the heart of our galaxy, where a supermassive black hole is thought to lurk.
22 September 2009, 10:21 AM ET
When black holes attack, they create some of the most powerful explosions in the universe.
04 September 2009, 09:37 AM ET
Most distant supermassive black hole yet discovered found in early galaxy.
02 September 2009, 09:13 AM ET
New image of spiral galaxy NGC 4945 shows star formation, active galactic center.
14 August 2009, 03:33 PM ET
A new study found that the earliest black holes lacked nearby matter to gobble up, and so lay relatively stagnant in pockets of emptiness.
12 August 2009, 06:55 AM ET
A star on the verge of collapsing to a black hole is shown in white. Gas clouds (blue) blown away by the star's intense light carve out a cavity that keeps the black hole from feeding.
23 July 2009, 01:32 PM ET
New image from Spitzer telescope shows coiled spiral galaxy with massive black hole.
02 July 2009, 02:23 PM ET
The black hole inside the M87 galaxy is accelerating particles to very high speeds, releasing photons with a trillion times more energy than visible light.
01 July 2009, 01:00 PM ET
A new study found the best evidence yet for a long-sought-after class of intermediate-sized black holes, researchers said.
24 June 2009, 02:59 PM ET
Perplexing "blobs" of gas seen in the faraway universe are a bit more comprehensible thanks to a new study.
08 June 2009, 03:01 PM ET
Giant galaxy M87 has biggest black hole yet weighed, suggests other black holes more massive than thought.
08 June 2009, 12:05 PM ET
New finding could help determine Hubble Constant.
04 June 2009, 10:26 AM ET
Dense Arches Cluster, near Milky Way black hole, has star masses like other clusters.
28 May 2009, 01:42 PM ET
X-ray remnant of early black hole eruption detected by Chandra Observatory.
28 May 2009, 12:24 PM ET
The orbiting Chandra X-Ray Observatory has nabbed a micro-quasar in the act of killing its own active radio jet. The weapon: radiation-driven wind.