Dark matter exists: Observations disprove alternate explanations

Phys.org ^ | International School of Advanced Studies (SISSA)

[ETL]

I find it confusing when they talk about the structure and dynamics of galaxies, given their enormous sizes, most of which are 10s or 100s of thousands of light years across, one light year being roughly 6 TRILLION miles. Since gravitational influences, like light, are thought to travel at the speed of light, how can these beasts even have a coherent structure, such as a neat spiral? Our own Milky Way spiral galaxy is roughly estimated at around 100,000 light years across.

Below is a link to an interesting related article on galaxy structure...

Why Aren’t Spiral Galaxies More Wound Up?
It’s rare to find a galaxy where the arms wrap around even a full 360 degrees. But after billions of years, why is that?

https://medium.com/starts-with-a-bang/ask-ethan-why-aren-t-spiral-galaxies-more-wound-up-7cd2e6731797

[ETL]

Messier 100

[ETL]

[ETL]

Spiral galaxy NGC 1232

[LYDIAONTARIO]

Amazing stuff! So amazing and complex that it is obvious an amazing, all-powerful God created this marvelous universe!

[Williams]

They believe dark matter exists BUT they have no idea what it is.

[The Duke]

Oh .. I get it now .. "dark matter" = what we used to call a "fudge factor".

I kinda like the old term because it makes me think of fudge. :)

[Innovative]

Another picture:

https://www.cnn.com/videos/world/2019/04/30/space-black-hole-plasma-clouds-wobble-icrar-lon-orig.cnn

I thought nothing can escape from black holes, but this shows plasma spewing out.

[Innovative]

Oops, by the time I posted the link they changed it. now it shows a hedgehog.

I did not confuse a black hole with a hedgehog.

[Innovative]

Try this link:

https://www.cnn.com/2019/04/30/world/spinning-black-hole-jets-scn/index.html

[zeestephen]

Thanks for posting.

Very interesting, but difficult to completely understand.

[Fungi]

This hedgehog? Dentinum repandum. An excellent edible..

[thoughtomator]

They’re trying to figure out the galaxy rotation curve problem.

The claim that this removes doubts about dark matter though is cultish in its ludicrousness.

[thoughtomator]

> They believe dark matter exists BUT they have no idea what it is.

Dark matter is literally “presumed stuff where it would need to be to keep current theories intact”.

Used to be that the need to do something like this to keep the theory intact was considered enough to falsify the theory.

But if the theory is unfalsifiable by doctrine, you get nonsense like dark matter to make it work.

[zeestephen]

The research institute this work came from - International School for Advanced Studies (SISSA) - is in Trieste, Italy, which is about 75 miles east of Venice.

First time I have heard about it.

[coaster123]

Yeah, right. That’s what Richard Gere says.

[Sapwolf]

I know God exists or a Creator simply by seeing an attractive lady while grocery shopping. Duh!

I don’t need any fancy smancy advanced math for that one.

Sure, she just randomly evolved from nothing. Yah rrrriiiiggghhhttt. ;-)

[Sgt_Schultze]

Whenever confusion increases about such matters, I always come back to this

Everything makes sense.

[imardmd1]

later

[SunkenCiv]

Thanks ETL.

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