Are galaxy orbiting around something?

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Galaxies primarily orbit around each other, but their movements also suggest they are influenced by unseen forces, particularly dark matter. Observations indicate that galaxies are moving at speeds that cannot be accounted for by the visible matter alone, reinforcing the dark matter hypothesis. Additionally, hydrogen and helium gas has been detected in the centers of these orbits, with its properties explained by gravitational effects attributed to dark matter. This discussion highlights the complexities of galaxy interactions and the role of dark matter in the universe. Understanding these dynamics is crucial for comprehending cosmic structures and their evolution.
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I know some galaxy orbite around other galaxy but are they orbiting only around each other?
 
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Yes, what else would they orbit?
 
Galaxies can be seen orbiting each other 'too quickly' to be explained by the matter the systems contain, another strong statement for the existence of dark matter. Hydrogen and helium gas has been detected/imaged with radio (X-ray?) telescopes in the center of the orbits at density and temperature being explained by the gravitation of the dark matter.

Want to cite source - believe it was during UC Irvine video lecture on Expanding Universe - James Bullock
www.youtube.com/watch?v=bAHBGtCX3cU
 

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