Interacting galaxies as a research area focuses on the dynamical, hydrodynamical, and radiative processes that occur when galaxies experience mutual gravitational influence, including fly-bys, minor and major mergers, and tidal encounters. Studies combine N-body and hydrodynamical simulations with multiwavelength observations to investigate tidal tails, bridges, bars, and induced starbursts, as well as gas inflows, feedback, and morphological transformation. This field is central to understanding hierarchical structure formation, the build-up of stellar mass, triggering and regulation of active galactic nuclei, and environmental effects on galaxy evolution across cosmic time, often using statistically defined samples from large surveys alongside detailed case studies.
It turns out that looming collision between our Milky Way and Andromeda galaxies might not happen after all.
Astronomy
Jun 7, 2025
0
61
New observations from NASA's Chandra X-ray Observatory and other telescopes have captured a rare cosmic event: Two galaxy clusters have collided and are now poised to head back for another swipe at each other.
Astronomy
Jun 4, 2025
0
64
Quasars are some of the brightest objects in the universe. A quasar is powered by large amounts of matter falling into the supermassive black hole at the center of a galaxy. Collisions and mergers between galaxies can cause ...
Astronomy
Jun 3, 2025
1
64
Scientists from Helsinki, Durham and Toulouse universities used data from NASA's Hubble and the European Space Agency's Gaia space telescopes to simulate how the Milky Way and Andromeda will evolve over the next 10 billion ...
Astronomy
Jun 2, 2025
1
241
Astronomers have witnessed for the first time a violent cosmic collision in which one galaxy pierces another with intense radiation. Their results, published in Nature, show that this radiation dampens the wounded galaxy's ...
Astronomy
May 21, 2025
0
104
Using the Very Large Array (VLA), an international team of astronomers have observed a nearby galaxy merger known as CIZA J0107.7+5408. Results of the observational campaign, presented December 20 on the preprint server arXiv, ...
NGC 5257 and NGC 5258 are gravitationally interacting galaxies of similar size and mass in the constellation Virgo.
Astronomy
Dec 5, 2024
0
44
A massive collision of galaxies sparked by one traveling at a scarcely-believable 2 million mph (3.2 million km/h) has been seen in unprecedented detail by one of Earth's most powerful telescopes.
Astronomy
Nov 22, 2024
0
781
This NASA/ESA Hubble Space Telescope image depicts the cosmic tangle that is MCG+05-31-045, a pair of interacting galaxies located 390 million light-years away and a part of the Coma galaxy cluster.
Astronomy
Nov 18, 2024
0
135
A story of survival is unfolding at the outer reaches of our galaxy, and NASA's Hubble Space Telescope is witnessing the saga.
Astronomy
Nov 14, 2024
1
513
