Galaxy clusters are rare regions of the universe consisting of hundreds of galaxies containing trillions of stars, as well as hot gas and dark matter.
Astronomy
Oct 24, 2018
10
115
Most galaxies host a supermassive black hole (SMBH) at their nucleus. (A supermassive black hole is one whose mass exceeds a million solar-masses.) A key unresolved issue in galaxy formation and evolution is the role these ...
Astronomy
Oct 15, 2018
4
90
Ultra-faint dwarf galaxies are the smallest, most dark matter dominated, and least chemically enriched stellar systems in the universe, and are important targets for understanding dark matter and galaxy formation. They comprise ...
Astronomy
Oct 1, 2018
4
186
Since the birth of modern astronomy, scientists have sought to determine the full extent of the Milky Way galaxy and learn more about its structure, formation and evolution. At present, astronomers estimate that it is 100,000 ...
Astronomy
Sep 21, 2018
12
54
An international team of astronomers from Japan, Mexico and the University of Massachusetts Amherst studying a "monster galaxy" 12.4 billion light years away today report that their instruments have achieved a 10 times higher ...
Astronomy
Aug 29, 2018
291
560
The Milky Way galaxy has died once before, and we are now in what is considered its second life. Calculations by Masafumi Noguchi (Tohoku University) have revealed previously unknown details about the Milky Way. These were ...
Astronomy
Aug 22, 2018
7
844
A team of astronomers has discovered a new way to unlock the mysteries of how the first galaxies formed and evolved.
Astronomy
Jul 24, 2018
1
189
Disc galaxies like our own Milky Way, characterized by a flattened disc of stars and gas (often with a central bulge of material as well) have a wide range of masses, spatial extents, and stellar content. Nonetheless all ...
Astronomy
Jul 23, 2018
0
80
Using integral field spectroscopy (IFS) and advanced modeling tools, Instituto de Astrofísica e Ciências do Espaço (IA) researchers Iris Breda and Polychronis Papaderos have achieved an important milestone towards solving ...
Astronomy
Jul 9, 2018
1
23
Galaxy-galaxy interactions have long been known to influence galaxy evolution. They are commonplace events, and a large majority of galaxies show signs of interactions, including tidal tails or other morphological distortions. ...
Astronomy
Jul 9, 2018
2
168
