Are galaxy orbiting around something?

  • Thread starter Thread starter 13lackJesus
  • Start date Start date
  • Tags Tags
    Galaxy
AI Thread Summary
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.
13lackJesus
Messages
5
Reaction score
0
I know some galaxy orbite around other galaxy but are they orbiting only around each other?
 
Astronomy news on Phys.org
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
 

Thread 'Potential biosignature found in Mars rock'

Publication: Redox-driven mineral and organic associations in Jezero Crater, Mars Article: NASA Says Mars Rover Discovered Potential Biosignature Last Year Press conference The ~100 authors don't find a good way this could have formed without life, but also can't rule it out. Now that they have shared their findings with the larger community someone else might find an explanation - or maybe it was actually made by life.
View full post »

Thread 'Does it make sense to build new radio telescopes?'

TL;DR Summary: In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect alien signals, it will further expand the radius of the so-called silence (or rather, radio silence) of the Universe. Is there any sense in this or is blissful ignorance better? In 3 years, the Square Kilometre Array (SKA) telescope (or rather, a system of telescopes) should be put into operation. In case of failure to detect...
View full post »

Thread 'Our Beautiful Universe - Photos and Videos'

This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
View full post »

Similar threads

Stargazing Dark matter and its effect on the orbit of stars
Replies
13
Views
3K
I Any Galaxy (Milky-way) based coordinate systems?
Replies
8
Views
2K
I How to graph Earth's path?
Replies
10
Views
2K
A A pair of interesting papers: have counterarguments been published?
Replies
10
Views
2K
I Shape of Dark Matter Halos & Visible Matter Angular Momentum
Replies
3
Views
2K
I Einstein ring and Einstein Cross
Replies
4
Views
1K
B How does the Milky Way galaxy move in the local Group?
Replies
2
Views
2K
I Measuring the Velocities of Astronomical Objects in the Milky Way
Replies
11
Views
2K
B Orbits of galaxies in the Coma Cluster
Replies
2
Views
2K
B What is responsible for the spinning of a galaxy?
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top