Came across this and thought it would be of interest:
If it proves correct, cosmology will have to step back to the drawing board.
Can’t wait for Dr. Becky’s January 16 ‘Night Sky’ video!
“Dark energy may not exist” is just another way of saying “the expansion of the universe may not be accelerating after all”. From my understanding as an armchair physicist, dark energy is a placeholder name for whatever is causing expansion to accelerate.
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True. The interesting aspect is that if there’s no dark energy then the amount of dark matter is greater than presently thought.
- God of the growing gaps?
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real?
dark = big fat question mark
It just means that the current theory doesn’t quite work and this could point to just about anything including something wrong with the theory itself. Most likely some missing piece of the puzzle.
I like Neil Turok’s idea in which there is no need for dark energy and dark matter is just neutrinos. AND it is testable (real science!).
If it proves correct, cosmology will have to step back to the drawing board.
Already been there for a while now.
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Just last week I stumbled onto a discussion (rather heated) between someone advocating that view of dark matter and someone arguing for WIMPs. I was surprised; I thought WIMPs had been ruled out.
I don’t have a particular view on this, however, it has aroused my interest and I would like to watch that discussion if there is an online reference to it St. Roymond?
FYI
Given the above uncertainty, what is the likelihood that it turns out that gravity is the dark matter/energy? Perhaps the two [dark energy and gravity] are so interrelated that they are kinda the same thing??
I mean if magnets have two poles where one attracts and the other repels, why not the same for gravity and dark energy???
I found this…
The most recent matching content online that I can find is two years old; most is four or five.
Of those I found, this covers the basics though it’s really light on the neutrino angle:
Along the way it also goes into some fascinating aspects of how particles behave.
Here’s one that looks promising, though the presentation isn’t the greatest (it reminds me of presenters of papers at conferences who hate public speaking); it also quickly gets rather hefty/dense (clearly expecting the audience to be familiar with the subject):
While looking, I learned that the term “dark matter” was actually coined in the early 1930s! and that along with the cosmic microwave background there is a cosmic neutrino-flux background.
I also noticed that advocates for the different positions can be extremely vehement against other views.
I think that would require that gravitons exist and themselves have mass plus to have something corresponding to charge.