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[–] MyDrunkAccount 1 point -1 points (+0|-1) ago 

Well, there's really no other way to put it though. I not a physicist but the way I understand it is that we can calculate the amount of gravity we can expect from a certain amount of mass and vice versa. This math has been tested and works, just look up the details of the Rosetta Sattelite, we launched it in 2004, in 2007 it made a Mars gravity assist followed by two asteroid flybys, and finally in 2014 (10 years after launch) it reached its target and established orbit around a 2.5x2.7mile rock traveling at 84,000mph. When this same math is used to calculate the mass:gravity of other galaxies, however, there are huge and varying discrepancies, almost like there's some kind of extra invisible bunches/pockets of mass floating around which can even be extrapolated and plotted by the gravitational forces it produces. In this case it's not easy to dismiss the math because we've shown that it works, so, they instead chalked it up to something that we don't know how to detect yet and gave it a name.

But like I said, that's just how I understood it from what I've been told, so take it with a grain of salt and heavy scrutiny.

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[–] B3bomber 2 points -1 points (+1|-2) ago 

There is no scientific theory of gravity at any scale. All of the Standard Model flat out ignores gravity for it's basis. They do not want to touch that subject because they do not understand it.

We have exactly 0 accurate measurements of exactly how much anything actually weighs. This includes our own planet, star, or 1 single hydrogen atom (don't even ask them how much gravity that 1 single hydrogen atom has, they can't answer it).

The best part of all this shit on black holes, they say the one at our galactic core weighs a few billion solar masses (a few billion of our Suns). Here's the kicker: we're pretty certain that 99% of our own solar system's mass is The Sun (and it's very well proven by everything in the vicinity orbiting it outright, though moons orbit the closer planet; they would orbit The Sun if that was not there). Now about that billion Sun mass black hole... this galaxy has Trillions of stars, with a great many much larger than our star. There is absolutely no doubt nearly everything in orbit in our galaxy orbits around that black hole.

Short version: I can prove someone completely fucked up their math.

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[–] BandBang 1 point -1 points (+0|-1) ago 

I think there is theories on gravity being controlled by particles, graviton maybe? When you jump into quantum stuff everything changes.