PhD Comics explain Dark Matter (With Speed Painting!)

"Recently, I sat down with physicists Daniel Whiteson and Jonathan Feng to talk about Dark Matter and how CERN's collider is helping answer the question: What is it?"
-From http://www.phdcomics.com/comics.php?f=1430
GeeSussFreeKsays...

I think the rest of the elephant looks like we don't actually know as much about gravity and space as we thought we did, not mystery matter that doesn't interact electromagnetically...but I will happily be wrong if not.

GeeSussFreeKsays...

>> ^COriolanus:

Can any one provide a link for an opposing view?


The one I have been reading about is MOND

http://en.wikipedia.org/wiki/MOND

There is also the newer, or newer to me, QG unification theory

http://en.wikipedia.org/wiki/Quantum_gravity

I think there is just a fundamental misunderstanding of the basic rules of matter, energy, time and space. I don't have much evidence to support this idea. It might be the same problem Einstein had with QED that I have with dark matter, it's messy. It seems like we are creating something first because of the maths we have agreed are true instead of questioning the fundamental understanding. I compaire it to Quine's web of belief. I could be wrong, perhaps there is some wacky matter out there that behaves the exact opposite of real matter, is most of the stuff in the universe, and doesn't interact electromagnetically with our plane of existence...but it seems like reaching for straws.

Ornthoronsays...

>> ^GeeSussFreeK:

>> ^COriolanus:
Can any one provide a link for an opposing view?

The one I have been reading about is MOND
http://en.wikipedia.org/wiki/MOND
There is also the newer, or newer to me, QG unification theory
http://en.wikipedia.org/wiki/Quantum_gravity
I think there is just a fundamental misunderstanding of the basic rules of matter, energy, time and space. I don't have much evidence to support this idea. It might be the same problem Einstein had with QED that I have with dark matter, it's messy. It seems like we are creating something first because of the maths we have agreed are true instead of questioning the fundamental understanding. I compaire it to Quine's web of belief. I could be wrong, perhaps there is some wacky matter out there that behaves the exact opposite of real matter, is most of the stuff in the universe, and doesn't interact electromagnetically with our plane of existence...but it seems like reaching for straws.


It's wrong that Dark Matter is just some wacky thing created because of the maths. It is observed, through its gravitational interaction. Just because it doesn't interact electromagnetically doesn't mean it's invisible. It's also wrong that Dark Matter behaves the exact opposite of real matter. The Standard Model of particle physics is far from complete, and we already know of particles that interact through one force of nature and not through others. To posit a new fundamental particle that could fit the Dark Matter profile is not really that far fetched. There are even candidates obtained through Supersymmetry that may or may not provide the right answer. I don't find this messy at all, and frankly, Nature doesn't care if you think its rules are messy or not.

Also, if you don't like messiness, MOND is really not the right answer for you. Modified Newtonian Dynamics is an interesting concept with some interesting results for their own sake, and it may still ultimately prove correct. The idea that extrapolation from high gravitational fields to low ones might be unsound is something that should not be dismissed. But so far, the data are not in MOND's favour.

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