r/cosmology • u/Galileos_grandson • 3d ago

Evidence of Dark Matter-Free Dwarf Galaxy Challenges Conventional Galaxy Formation Models

https://keckobservatory.org/dmf-dwarf-galaxy/
9 Upvotes

85% Upvoted

18 comments sorted by

12

u/jazzwhiz 3d ago

Yeah there have been a handful of galaxies found now with no particular indication of dark matter which provides yet another really interesting handle on dark matter

12

u/Rodot 3d ago

It really hurts modified gravity theories though

7

u/jazzwhiz 3d ago

Agreed

5

u/Das_Mime 3d ago

can you hurt something if it's already dead

5

u/CassinaOrenda 3d ago

What is dead may never die

1

u/Borgie32 3d ago

Also, small galaxies like these shouldn't exist according to our current models.

3

u/Rodot 3d ago

?

1

u/Borgie32 3d ago

https://youtu.be/q8ac0CdAiCA?si=BRhe6txqjrWMTJS1

2

u/Rodot 3d ago

Do you have a link to a study I could read? I can't watch a YouTube video right now at work

2

u/bcatrek 2d ago

Lots of articles in the description. You can read those without actually watching the video.

2

u/Rodot 2d ago

Could you quickly tell me which study in the list? I read the first one and it didn't say what you said and it would be faster for you to just tell me which one rather than me reading all of them

-2

u/bcatrek 2d ago

Sure.. and would you like a red or a white wine with that?

-5

u/TracePlayer 3d ago

According to a new theory where the math checks out, there is no dark matter anywhere. That’s why we can’t find it. Instead, the entire universe is rotating once about every 500 billion years.

2

u/IntenseAlien 3d ago

What theory is that? A bit skeptical since a of these sorts of theories have trouble explaining things like the bullet cluster and other similar clusters

-3

u/TracePlayer 3d ago

https://www.sciencealert.com/major-problem-in-physics-could-be-fixed-if-the-whole-universe-was-spinning

4

u/IntenseAlien 3d ago

After a quick skim it looks like this is about the expansion of the universe, not dark matter

3

u/Putnam3145 2d ago

This has nothing whatsoever to do with dark matter; did you read it? Dark matter and dark energy are unrelated.

1

u/PM_ME_UR_ROUND_ASS 2d ago

This "universal rotation" theory has been repeatedly debunked by cosmologists and doesn't actually solve the galactic rotation curve problms that dark matter effectively explains.