As far as the eye can see, galaxies fill the images of the deep universe. What processes determined their shapes, colors and populations of stars? Astronomers think that primordial black holes were the engines of galaxies' ...
Astronomy
Dec 6, 2023
3
128
Astronomers have observed, for the first time in three dimensions, that gas from spiral galaxies is blown upward and downward at high velocity, far out of the galaxy. The observations confirm the prevailing theory of galaxy ...
Astronomy
Dec 6, 2023
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31
Black holes—the cosmic behemoths known for powering some of the brightest radio wave sources in the universe—were the focal point of a study led by Associate Professor Michael Brown, from the School of Physics and Astronomy ...
Astronomy
Dec 5, 2023
2
219
An entirely new way to probe how active black holes behave when they eat has been discovered by an international team of astronomers.
Astronomy
Dec 4, 2023
0
159
A star near the supermassive black hole at the center of the Milky Way galaxy originated outside the galaxy according to a new study published in Proceedings of the Japan Academy, Series B. This is the first time a star of ...
Astronomy
Dec 4, 2023
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1825
Three astronomers from the Netherlands have proven that gas that was previously heated near a supermassive black hole flowed to the outskirts of the galaxy and cooled down, moving back towards the black hole. While there ...
Astronomy
Nov 30, 2023
0
73
A cornerstone but surprising prediction arising from Einstein's theory of general relativity is the existence of black holes, which astronomers later found to be widespread throughout the universe. Key characteristics of ...
Astronomy
Nov 30, 2023
0
79
An international team of researchers including Prof. Badri Krishnan at Radboud University has verified an important property of black holes known as the no-hair theorem using gravitational wave observations. Their research ...
General Physics
Nov 30, 2023
2
94
An international team of astronomers has inspected a low-mass X-ray binary system known as GX 339-4. Results of the study, reported in a paper published Nov. 21 on the pre-print server arXiv, shed more light on the high-frequency ...
When galaxies collide, their supermassive black holes enter into a gravitational dance, gradually orbiting each other ever closer until eventually merging. We know they merge because we see the gravitational beasts that result, ...
Astronomy
Nov 27, 2023
1
55
