Astronomers discover a strange galaxy without dark matter

Re:Astronomers discover a strange galaxy without dark matter by gwerbret on Wednesday January 12, 2022 @07:51PM (#29915296)

While other more knowledgeable folks than I have pointed out some very important things about your highly-declarative statement about dark matter, I'll raise one minor point about this research finding, which you can glean by reading the abstract of the actual paper [0].

The galaxy in question, AGC 114905, is described as lacking dark matter _because_ its rotational characteristics are readily explained by its baryonic matter content alone. MOND, therefore (and your entire argument), does not apply. You may have mistaken this for a regular galaxy with "missing" matter that also happens to lack dark matter, which would then suggest the need for an alternate explanation.

EDIT: The abstract also says, among other things: "We also find that the rotation curve of AGC 114905 deviates strongly from the predictions of Modified Newtonian dynamics."

[0]: https://academic.oup.com/mnras/advance-article/doi/10.1093/m...

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Re:Astronomers discover a strange galaxy without dark matter by sahil50 on Wednesday January 12, 2022 @08:37PM (#29915711)

fyi, I started my comment with fyi. The point being that the premise of the article is overblown.

McGaugh says the same here https://www.scientificamerican.com/article/dark-matter-may-b....

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Re:Astronomers discover a strange galaxy without dark matter by mlyle on Wednesday January 12, 2022 @10:34PM (#29916518)

FYI means "for your information". We use it when we are telling people about settled facts. It's also three letters that based on context could be seen as condescending on their own.

When we are discussing not-settled facts, there's better ways to frame our discussion.

For instance: "I believe, that CDM is an antiquated theory and MOND is a better explanation, because _______. I've had discussions with ______ and in particular ______"

It's less effort than your opening flame, it's less abrasive, and it opens productive discourse. Your opening statement is more like that of a political partisan than someone seeking discussion.

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Re:Astronomers discover a strange galaxy without dark matter by sahil50 on Wednesday January 12, 2022 @11:40PM (#29916928)

Intelligent and good people have followed the advice above, and the result has been more error and harm.

Therefore, learning from their experience, the one thing that works is accurately calling the status quo's invisible blobs of noninteracting kludge as what it is.

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