See also stories tagged with Black hole
Search results for black holes
Black Holes Go 'Mano a Mano'
Oct 06, 2009 |
4.3 / 5 (15) |
11
(PhysOrg.com) -- Two black holes in galaxy NGC 6240 are only 3,000 light years apart -- and getting closer.
Scientists find black hole 'missing link'
Sep 17, 2008 |
4.2 / 5 (56) |
11
Scientists at Durham University have found the "missing link" between small and super-massive black holes.
Astronomers discover upper mass limit for black holes
Sep 11, 2008 |
4.4 / 5 (40) |
9
There appears to be an upper limit to how big the universe's most massive black holes can get, according to new research led by a Yale University astrophysicist.
Astronomer Discovers Upper Mass Limit for Black Holes
Sep 05, 2008 |
4.4 / 5 (49) |
17
There appears to be an upper limit to how big the universe’s most massive black holes can get, according to new research led by a Yale University astrophysicist.
Cookie cutter in the sky: Seeing the shape of material around black holes for first time
Dec 16, 2008 |
4.6 / 5 (27) |
34
Black holes can now be thought of as donut holes. The shape of material around black holes has been seen for the first time: an analysis of over 200 active galactic nuclei—cores of galaxies powered by disks ...
Rogue Black Holes May Roam the Milky Way
Apr 29, 2009 |
4.3 / 5 (21) |
13
(PhysOrg.com) -- It sounds like the plot of a sci-fi movie: rogue black holes roaming our galaxy, threatening to swallow anything that gets too close. In fact, new calculations by Ryan O'Leary and Avi Loeb ...
New class of black holes discovered
Jul 01, 2009 |
5 / 5 (22) |
15
A new class of black hole, more than 500 times the mass of the Sun, has been discovered by an international team of astronomers.
Black Holes Lead Galaxy Growth
Jan 06, 2009 |
4.5 / 5 (12) |
6
(PhysOrg.com) -- Astronomers may have solved a cosmic chicken-and-egg problem -- the question of which formed first in the early Universe -- galaxies or the supermassive black holes seen at their cores.
A new way to weigh giant black holes
Jul 16, 2008 |
4.6 / 5 (23) |
5
How do you weigh the biggest black holes in the universe? One answer now comes from a completely new and independent technique that astronomers have developed using data from NASA's Chandra X-ray Observatory.
Cygnus X-1: Still a 'Star' After All Those Years
Aug 28, 2009 |
4.5 / 5 (11) |
4
Since its discovery 45 years ago, Cygnus X-1 has been one of the most intensively studied cosmic X-ray sources. About a decade after its discovery, Cygnus X-1 secured a place in the history of astronomy when ...
The Edge of a Black Hole
Aug 18, 2009 |
4 / 5 (27) |
14
The existence of black holes is one of the most amazing and bizarre predictions of Einstein's theory of gravity. Despite his original misgivings about their reality, massive black hole holes are today believed ...
Erratic black holes regulate their growth (w/Videos)
Mar 25, 2009 |
4.7 / 5 (9) |
5
(PhysOrg.com) -- New results from NASA's Chandra X-ray Observatory have made a major advance in explaining how a special class of black holes may shut off the high-speed jets they produce. These results suggest ...
Most Black Holes Might Come in Only Small and Large
Aug 20, 2008 |
4.3 / 5 (32) |
22
(PhysOrg.com) -- Black holes are sometimes huge cosmic beasts, billions of times the mass of our sun, and sometimes petite with just a few times the sun's mass. But do black holes also come in size medium? ...
A Newtonian system that mimics the baldness of rotating black holes
Feb 23, 2009 |
4.3 / 5 (18) |
3
(PhysOrg.com) -- The rotating black hole has been described as one of nature's most perfect objects. As described by the Kerr solution of Einstein's gravitational field equations, its spacetime geometry is ...
Researchers explain the activity of black holes at the centre of galaxy clusters
Sep 04, 2009 |
3.9 / 5 (15) |
27
(PhysOrg.com) -- Astronomers at the University of Bonn have clarified the connection between black holes at the centre of galaxy clusters and surrounding gas, which serves them as "food". The scientists have ...
