An international group of astronomers, led by a physicist at the University of St Andrews, has revived an alternative gravity theory.
Astronomy
May 20, 2022
10
207
A team of astrophysicists affiliated with multiple institutions in the U.S., one in Germany and one in Canada, has developed a new theory to explain the existence of odd, dark matter–free dwarf galaxies. In their paper ...
This newly revised NASA Hubble Space Telescope image of the Hickson Compact Group 31 (HCG 31) of galaxies highlights streams of star-formation as four dwarf galaxies interact. The bright, distorted clump of young blue-white ...
Astronomy
May 17, 2022
0
181
A quadruple star system discovered in 2017 and recently observed at the University of Canterbury Mt. John Observatory could represent a new channel by which thermonuclear supernova explosions can occur in the universe, according ...
Astronomy
May 13, 2022
2
372
The magnificent spiral galaxy M99 fills the frame in this image from the NASA/ESA Hubble Space Telescope. M99—which lies roughly 42 million light-years from Earth in the constellation Coma Berenices—is a "grand design" ...
Astronomy
May 9, 2022
0
34
Black holes are often described as the monsters of the universe—tearing apart stars, consuming anything that comes too close, and holding light captive. Detailed evidence from NASA's Hubble Space Telescope, however, shows ...
Astronomy
Jan 19, 2022
6
355
The discovery of a supermassive black hole in a relatively small galaxy could help astronomers unravel the mystery surrounding how the very biggest black holes grow.
Astronomy
Jan 10, 2022
0
434
One of the characteristic features of modern cosmology is its description of how galaxies evolve: via a hierarchical process of colliding and merging with other systems. Nowhere in the universe do we have a clearer view of ...
Astronomy
Jan 7, 2022
0
675
Data from ESA's Gaia mission is re-writing the history of our galaxy, the Milky Way. What had traditionally been thought of as satellite galaxies to the Milky Way are now revealed to be mostly newcomers to our galactic environment.
Astronomy
Nov 25, 2021
7
3016
As their name suggests, ultradiffuse galaxies, or UDGs, are dwarf galaxies whose stars are spread out over a vast region, resulting in extremely low surface brightness, making them very difficult to detect. Several questions ...
Astronomy
Sep 6, 2021
6
1232
