3 ms·
As I understand, we can detect them through their gravitational effects and not much else. If we fully account for the pulls of all the non-dark bodies in the v
by hliyan 11y ago
As I understand, we can detect them through their gravitational effects and not much else. If we fully account for the pulls of all the non-dark bodies in the vicinity (Earth, Sun, Moon) and then manage to measure an anomalous gravitational pull (say on a mass connected to an extremely fine sensor) that changes with the motion of the measuring apparatus, that (I think) ought to do it.
Disclaimer: not physicist.
- ccozan 11y agoactually, there is something that it is not really understood: the 5.9 years period of gravitational constant variation. [1]. Maybe the Earth is passing through such a filament? [1] http://phys.org/news/2015-04-gravitational-constant-vary.html http://phys.org/news/2015-04-gravitational-constant-vary.htm...
- hliyan 11y agoInteresting! But... it's been 15 years since my last university level physics course, but those error bars in the plot doesn't exactly lend lot of confidence to the idea of a periodic pattern?
- ISL 11y agoThere's been a follow-up paper from three scientists whose independent G-measurements reach some of the lowest-claimed uncertainties. http://arxiv.org/abs/1505.01774 http://arxiv.org/abs/1505.01774
- kamaal 11y agoNot a physicist either. But from what I understand from Lawrence Kraus's lecture 'A universe from nothing' is they found light bending(A phenomenon similar to gravitational lensing) around a massive start cluster, the amount observed and the mass in that area was insufficient to explain how that kind of phenomenon was possible. When looked at from the perspective of Gravitational lensing[A phenomenon that bends light] there is some kind of aether 2.0 with a mass that causes the gravitational lensing effect. Personally I think this is the wrong approach to work with this. We know that a cause c1, was the result of phenomenon p1. We are assuming another cause c2, which is very similar to c1 MUST also be happening due to p1. It might very well be there is a phenomenon p2 responsible for c2. We seem to be trying to state cause(dark matter) in terms of its side effect(phenomenon similar to gravitational lensing) without understanding what it actually is.