(Phys.org) -- Black holes in the early universe needed a few snacks rather than one giant meal to fuel their quasars and help them grow, according to observations from NASA's Spitzer and Hubble space telescopes.
Astronomy
Jun 20, 2012
1
0
Brown University physicists have set the strongest limit for the mass of dark matter, the mysterious particles believed to make up nearly a quarter of the universe. The researchers report in Physical Review Letters that dark ...
General Physics
Nov 23, 2011
43
0
(PhysOrg.com) -- A new analysis of images from the Hubble Space Telescope combined with supercomputer simulations of galaxy collisions has cleared up years of confusion about the rate at which smaller galaxies merge to form ...
Astronomy
Oct 27, 2011
1
0
(PhysOrg.com) -- A new image from NASA's Spitzer Space Telescope offers a rare view of an imminent collision between the cores of two merging galaxies, each powered by a black hole with millions of times the mass of the sun. ...
Astronomy
Mar 16, 2009
3
0
When spectacular cosmic events such as galaxy collisions occur, it sets off a reaction to form new stars, and possibly new planets that otherwise would not have formed. The gravitational pull that forces the collisions between ...
Astronomy
Feb 9, 2024
32
3718
A collision of two massive clusters of galaxies when the universe was half its current age should not have happened according to the standard theory of cosmology, says a new study by an international group of astronomers, ...
Astronomy
Sep 13, 2023
0
90
Galaxy collisions are transformative events, largely responsible for driving the evolution of the universe. The mixing and mingling of stellar material is an incredibly dynamic process that can lead to the formation of molecular ...
Astronomy
Mar 29, 2023
2
540
Astronomers have discovered the first evidence for giant black holes in dwarf galaxies on a collision course. This result from NASA's Chandra X-ray Observatory has important ramifications for understanding how the first wave ...
Astronomy
Feb 22, 2023
0
473
Astronomers have captured a spectacular, ongoing collision between at least three galaxy clusters. Data from NASA's Chandra X-ray Observatory, ESA's (European Space Agency's) XMM-Newton, and a trio of radio telescopes is ...
Astronomy
Jan 30, 2023
48
182
A detailed analysis of the composition and motion of more than 500 stars has revealed conclusive evidence of an ancient collision between Andromeda and a neighboring galaxy. The findings, which improve our understanding of ...
Astronomy
Jun 13, 2022
1
719
