Galaxy disks as a research area focuses on the structure, dynamics, formation, and evolution of the flattened, rotationally supported components of galaxies, particularly spiral and lenticular systems. Studies address stellar and gas kinematics, angular momentum distribution, and the interplay between baryons and dark matter in shaping disk profiles (e.g., exponential or broken-exponential). The field investigates disk instabilities, spiral arms, bars, secular evolution, star formation regulation, radial migration, and vertical thickening, often using multiwavelength observations, integral-field spectroscopy, and cosmological simulations. Galaxy disk research is central to constraining galaxy assembly histories, feedback processes, and the coupling between galactic disks, halos, and their broader cosmological environment.
A new study led by researchers at the Institute of Cosmos Sciences of the University of Barcelona (ICCUB) and the Institute of Space Studies of Catalonia (IEEC) reveals how the disks of galaxies like the Milky Way are affected ...
Astronomy
May 18, 2026
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Billions of years ago, a young spiral galaxy began to grow in a crowded part of the universe. It pulled in gas and small companion galaxies, slowly building up the bright central region and sweeping spiral arms we see today.
Astronomy
May 14, 2026
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44
Astronomers who simulate galaxies do not always get the same result, even when they start from identical conditions. New research from Leiden University shows that this is not a flaw, but a consequence of how galaxies behave—and ...
Astronomy
May 11, 2026
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133
An international team of astronomers has employed the Atacama Large Millimeter/submillimeter Array (ALMA) to perform high-resolution observations of the Needle galaxy. Results of the new observational campaign, presented ...
Messier 104, nicknamed the Sombrero Galaxy, is a popular target for amateur observing and astronomical research. Its recognizable extended halo, as well as a faint stellar stream, are captured in exquisite detail in this ...
Astronomy
Apr 24, 2026
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How far the Milky Way's disk extends has long been difficult to define—it doesn't end sharply, but fades away gradually at its outer edges. Now, for the first time, an international team of astronomers has identified the ...
Astronomy
Apr 21, 2026
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53
Using ESA's Gaia satellite, astronomers have investigated three open clusters in the galactic disk, namely Berkeley 17, 18 and 39. Results of the new study, published January 21 on the arXiv pre-print server, yield crucial ...
A research team led by Professor Woong-bae Zee at Sejong University has uncovered compelling evidence that the distinctive warped shapes of many disk galaxies are closely tied to both their surrounding satellite systems and ...
Astronomy
Dec 10, 2025
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19
A research team from the Yunnan Observatories of the Chinese Academy of Sciences (CAS), in collaboration with other researchers, has developed a new method to estimate how stellar-mass compact objects (COs)—including black ...
Astronomy
Dec 10, 2025
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44
Disk galaxies, like our own Milky Way galaxy, commonly consist of both a thick and thin disk of stars—each with different features, including stellar population and movement. Three major theoretical scenarios have been proposed ...
Astronomy
Jun 26, 2025
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