Dark Matter Measurements

ksp0704 writes: "According to this article at space.com, scientists have finally measured the approximately 90% of the universe we can't see (the dark matter)." I'm sure it will continue to be a topic of debate for years, but two independent measurements agreeing is a good sign.

Comments

The reason is that Galaxies are screwed up

[Alien54]

So, how the f*ck is it that we know exactly how much ELSE there is out there?

They look at the galaxies, and estimate how many stars and stuff there is in the galaxy. Any rotating galaxy. And They figure out how fast the galaxy is rotating.

They notice a problem. For any rotating galaxy there is not enough star stuff to hold the galaxy together. The spiral arms should never be there.

The star stuff in the galaxies do not have have enough gravity to hold galaxies together. Galaxcies should not exist at all. Stars should be all flying about because that is how weak the gravity is.

Just how much too weak? The Star stuff has one tenth the gravity needed to do the job. so something has to be doing the other 90%.

That is what the dark matter is. It is a term to label what the other 90% is. The don't know what it is yet. but they are working on it.