20 December 2006, 01:04 PM ET
Astronomers have detected a new class of enigmatic stars that appear to fade away quietly and in the dark.
18 December 2006, 03:54 PM ET
Astronomers might have seen the very first stars in the universe. If so, these are incredible stars, some 1,000 times as massive as the Sun.
27 November 2006, 12:29 PM ET
An eruption of high-energy radiation recently signaled a tantrum unleashed by a black hole, astronomers announced today.
20 November 2006, 09:39 AM ET
An international team of astronomers measured the spinning speed of three black holes, finding that one rotates at a breakneck 950 times per second, nearing its rotation limit of 1,150 spins a second.
12 October 2006, 12:37 PM ET
Hubble observations of the radio galaxy MRC 1138-262, nicknamed the "Spiderweb Galaxy", have provided a dramatic glimpse of a large massive galaxy under assembly as smaller galaxies merge.
06 October 2006, 11:19 AM ET
NASA’s Chandra X-ray Observatory “listen” to sounds emanating from supermassive black hole.
05 October 2006, 03:02 PM ET
Astronomers have looked under the hoods of quasars, the brightest objects in the universe, and found some of the best evidence yet for the black holes that are thought to power them.
05 October 2006, 02:38 PM ET
A new census compiled by astronomers contains the location of every nearby galaxy with a supermassive black hole at its center.
02 October 2006, 02:00 AM ET
Stars in large galaxies formed much earlier than astronomers previously thought.
05 September 2006, 12:17 AM ET
Supermassive black holes play a stealthy role in two major types of galaxies in the universe, bulking up until they are big enough to effectively shut down the formation of new stars, scientists have found.
30 August 2006, 01:00 PM ET
Astronomers have detected a GRB-supernova hybrid that could shed light on the mechanism behind both.
26 July 2006, 03:55 PM ET
An extensive survey designed to find black holes has come up surprisingly short, leaving astronomers to wonder if their theories about these cosmic gravity wells are correct.
10 July 2006, 12:04 AM ET
With their X-ray vision, and other techniques, researchers are monitoring the chaotic environments around these black holes trying to solve some longstanding mysteries.
26 June 2006, 10:42 AM ET
A space telescope scheduled for launch in 2007 will be sensitive enough to detect theoretical miniature black holes lurking within our solar system. In doing so, it could test an exotic five-dimensional theory of gravity that competes with Albert Einstein
21 June 2006, 01:08 PM ET
Contrary to what you might think, a black hole's gravitational tug isn't strong enough to send matter falling into its center. It's magnetism that provides the final nudge inwards, a new study finds.
20 June 2006, 08:00 PM ET
In this animation of GRO J1655-40, gas is being drawn from the surface of the normal star onto the black hole's rotating accretion disk. Magnetic fields cause some of the gas to fall onto the black hole, and light is emitted in the process.
29 May 2006, 07:10 AM ET
A distinctive feature of black holes is the discharge of narrow jets that shoot matter into space in a continuous stream near the speed of light. But NASA's Spitzer Space Telescope has recently found one of these jets around a dense stellar corpse known a
01 May 2006, 02:04 PM ET
Astronomers have detected the closest supermassive black hole neighbors yet. The pair dance around each other from a distance of about 24 light years, closer than Earth is to the bright star Vega.
24 April 2006, 01:58 PM ET
A new study finds that black holes are the most fuel efficient engines in the universe. If they were cars, they could travel over a billion miles on a single gallon of gas.
24 April 2006, 06:40 AM ET
Doomsayers and Chicken Little types can now rest a little easier. Scientists say the chances of our planet being struck by high energy gamma ray burst are close to nil.
18 April 2006, 02:47 PM ET
The types of black hole mergers predicted by Einstein's general relativity have been accurately simulated with a computer model for the first time. The model could help scientists detect elusive gravitational waves that should be produced by such mergers.
18 April 2006, 09:00 AM ET
Hubble has captured the most detailed images to date of open star clusters in a small galaxy orbiting our Milky Way. Such clusters contain thousands of stars all created from the same material and are excellent laboratories for studying stellar evolution.
06 April 2006, 11:48 AM ET
The black holes leave trails like jet contrails, allowing astronomers to predict their union.
05 April 2006, 01:00 PM ET
The discovery of a debris disk formed in the aftermath of a supernova explosion helps explain how planets can form around dead stars.
08 March 2006, 01:00 PM ET
The most distant explosion ever recorded, signaling the birth of a black hole, was more chaotic and lasted longer than astronomers would have expected.
27 February 2006, 06:48 AM ET
Astronomers have learned a lot about our home galaxy in recent years. SPACE.com presents a New Tourist's Guide to the Milky Way.
24 January 2006, 06:21 AM ET
A black hole in the constellation Scorpius is emitting two X-ray frequencies that are identical to those detected nine years ago. The finding, predicted by Albert Einstein’s theory of general relativity, suggests the black hole has created a stable dent f
10 January 2006, 01:17 PM ET
Scientists have found the first strong evidence that the supermassive black holes at the hearts of some galaxies weren't born big, but grew to their monstrous mass through the mergers of smaller galaxies.
09 January 2006, 11:20 AM ET
A type of X-ray explosion found on neutron stars does not occur near black holes, scientists announced here today. The lack of explosions is strong evidence for the existence of a black hole event horizon, a theoretical boundary into which matter vanishes
14 December 2005, 01:03 PM ET
A distant eruption of high-energy gamma rays is evidence for a black hole swallowing another dense object called a neutron star, astronomers announced today.
01 December 2005, 12:01 PM ET
Giant plumes caused by explosive venting from the vicinity of a supermassive black holeprovide dramatic new evidence of the influence a black hole can have over intergalactic distances.
02 November 2005, 01:01 PM ET
The black hole at the center of our Galaxy could fit within the distance between Earth and the Sun, according to a new study. The finding brings scientists one-step closer to obtaining the ultimate proof that the object massive object is indeed a black ho
13 October 2005, 01:01 PM ET
Stars are born closer to the Milky Way's central back hole than was thought possible.
11 October 2005, 06:23 AM ET
At the core of the Milky Way is a supermassive black hole that sucks in light, rendering it virtually invisible. But astronomers say they will be able to see the black hole's overall shadow within a few years.
05 October 2005, 01:00 PM ET
After decades chasing short-duration gamma-ray bursts, astronomers think they've finally figured out the source: merging neutron stars.
20 September 2005, 01:00 PM ET
Stars race around a black hole at the center of the Andromeda galaxy so fast that they could go the distance from Earth to the Moon in six minutes.