this post was submitted on 09 Jul 2024
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“We need to consider alternatives to dark matter that better explain cosmological observations” (see comments for discussion) (theconversation.com)
submitted 4 months ago* (last edited 4 months ago) by otter@lemmy.ca to c/space@lemmy.world
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edit: title was modified to call attention to the discussion in the comments

The article is by Rajendra Gupta, Adjunct professor Physics @ L’Université d’Ottawa/University of Ottawa

First few lines:

Do constants of nature — the numbers that determine how things behave, like the speed of light — change over time as the universe expands? Does light get a little tired travelling vast cosmic distances? It was believed that dark matter and dark energy explained these cosmological phenomena, but recent research indicates that our universe has been expanding without dark matter or dark energy.

Doing away with dark matter and dark energy resolves the “impossible early galaxy problem,” that arises when trying to account for galaxies that do not adhere to expectations regarding to size and age. Finding an alternative to dark matter and energy that complies with existing cosmological observations, including galaxy distribution, is possible.

“We need to consider alternatives to dark matter that better explain cosmological observations” (see comments for discussion)

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[–] traches@sh.itjust.works 41 points 4 months ago (18 children)

Astronomers are surprised to learn that many observations show a complete absence of dark matter or dark matter-deficient structures. This leads one to question its existence.

This is evidence for dark matter, not against it.

Relevant xkcd

[–] otter@lemmy.ca 7 points 4 months ago (2 children)

Always a relevant xkcd

[–] thalience@lemmy.world -2 points 4 months ago (1 children)

If you knew it was bullshit, why did you post it? Shame on you

[–] otter@lemmy.ca 5 points 4 months ago* (last edited 4 months ago)

Well I didn't, I'm not an expert in this topic. The article was written by an adjunct professor at uOttawa, so I judged it higher than the other pop science articles I come across.

I considered deleting the post, but since I still don't know if the content is completely false (disinformation) or just academic discussion, and since the comment section has good discussion, I left it up.

I can edit the title if that helps, maybe

"We need to consider alternatives to dark matter that better explain cosmological observations" (see comments for discussion)

I didn't know about this particular xkcd till now, and it's funny because of how relevant it is to this exact situation

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