Another possibility is to look for indirect effects of dark matter particles in our galaxy, or dwarf galaxies surrounding the Milky Way. The main idea underlying this kind of research is the possibility for dark matter to annihilate (or decay) in the interstellar medium, or generally near ...
This led to the conclusion that there are a factor of 10 more galaxies in a given volume of space when the universe was a few billion years old compared with today. Most of these galaxies are low mass systems with masses similar to those of the satellite galaxies surrounding the Milky Way...
There are still many mysteries surrounding galaxy formation, but on the next page we'll explain some of the best theories about it. Light-years Away Galaxies are far apart. The Andromeda galaxy, which is also called M31 (Messier object #31), is the closest galaxy to us — 2.2 million...
When a supermassive black hole’s gigantic gravitational forces begin to pull and heat surrounding material, they begin emitting energy as either radiation or in jets. Radiative-mode black holes were generally a staple of a young universe, whereas jet-mode versions are more common in the present...
Surrounding the galaxy for thousand and thousand of light years is space.At great distances,however,billions of other galaxies are scattered.These galaxies are of many shapes and sizes.The Milky Way Galaxy is shaped like a spiral(螺旋型)disk.Other galaxies have been found to be shaped like ...
Artist's impression of a "baby" Milky Way-like galaxy in the early universe with a bright quasar shining through the galaxy's surrounding halo of hydrogen gas. Those halos move far beyond the galaxy's star-forming disks, new research suggested.(Image credit: A. Angelich/NRAO/AUI/NSF) ...
The new observations with ESO’s VLT revealed several galaxies surrounding a supermassive black hole, all lying in a cosmic “spider’s web” of gas extending to over 300 times the size of the Milky Way. “The cosmic web filaments are like spider’s...
This galaxy, known as Mrk 820, is classified as a lenticular galaxy. Surrounding Mrk 820 is a slew of other galaxy types from elliptical to spiral.(Image credit: ESA/Hubble & NASA and N. Grogin (STScI), Acknowledgement: Judy Schmidt) ...
Initially, each individual lump expanded because the whole universe was expanding. However, as the universe continued to expand, the regions of higher density acquired still more mass because they exerted a slightly larger than average gravitational force on surrounding material. If the inward pull of...
et al. Mapping dusty galaxy growth at z > 5 with FRESCO: detection of Hα in submm galaxy HDF850.1 and the surrounding overdense structures. Preprint at https://arxiv.org/abs/2309.04525 (2023). Schaye, J. et al. The FLAMINGO project: cosmological hydrodynamical simulations for large-...