How are galaxies formed?

Galaxies are vast systems of stars, gas, dust, and dark matter that are held together by gravity. Scientists believe that galaxies are formed through a process called hierarchical clustering, in which smaller structures, such as protogalaxies and galaxy groups, come together to form larger structures over time. These structures are fueled by a combination of gravitational collapse, accretion of gas and dust, and mergers with other galaxies. The exact process of galaxy formation is still a subject of ongoing research and debate, but scientists have made significant progress in understanding the mechanisms involved.

This mind map was published on 31 May 2023 and has been viewed 70 times.