Make Sense of our Solar System's Place in the Universe

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SUMMARY

This discussion clarifies the structure of galaxies, specifically addressing the Andromeda galaxy. Stars orbit a common center of mass, which is typically the galaxy's core, a densely populated area that may contain black holes. The bright light observed in the Andromeda image is identified as a companion galaxy, while other stars in the image are part of the Milky Way and distant galaxies captured by the telescope.

PREREQUISITES
  • Understanding of galaxy structures and dynamics
  • Familiarity with astronomical imaging techniques
  • Basic knowledge of gravitational forces in astrophysics
  • Awareness of black hole characteristics and their role in galaxies
NEXT STEPS
  • Research the gravitational dynamics of galaxy formation
  • Explore the role of black holes in galactic centers
  • Learn about the Andromeda galaxy and its characteristics
  • Investigate astronomical imaging methods and their applications
USEFUL FOR

Astronomy enthusiasts, astrophysicists, and students studying galaxy formation and dynamics will benefit from this discussion.

DB
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When I think of a solar system I think of a star being orbited by smaller planets.But if planets orbit stars, what do stars orbit?

Like in this picture of Andromeda:

http://www.timelessmyths.com/classical/gallery/stars/andromeda.jpg

What are all those stars circling? What is that bright light in the middle?

One more Question: If stars are what make up galaxies, what are those stars that seem to be out of the orbit and that bright object on the bottom of the picture?

Ty
 
Last edited by a moderator:
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DB said:
When I think of a solar system I think of a star being orbited by smaller planets.But if planets orbit stars, what do stars orbit?
The common center of mass of the the other stars. Or in other words, the mass of stars that are closer to the center of the galaxy tha they are.
Like in this picture of Andromeda:

http://www.timelessmyths.com/classical/gallery/stars/andromeda.jpg

What are all those stars circling? What is that bright light in the middle?
That is the core of the Galaxy. it is just a more densely populated area of the galaxy, though many galaxies do also harbor black holes at their centers.
One more Question: If stars are what make up galaxies, what are those stars that seem to be out of the orbit and that bright object on the bottom of the picture?

Ty

Those are other, further galaxies that the telescope picked up in the background.
 
Last edited by a moderator:
Janus said:
Those are other, further galaxies that the telescope picked up in the background.
And foreground Milky Way stars. That bright object is a companion galaxy to Andromeda.
 

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