The latest on Dark Matter

Breakthoughs are expected as current experiments continue with dark matter, which occupies 85% of the cosmos. The November 2013 issue of Popular Science magazine has the details in this free link:

http://www.popsci.com/article/science/inside-hunt-dark-matter?nopaging=1

Here is a synopsis of an experiment launched in 2013 by a physics laboratory to better understand Dark Energy:

http://www.interactions.org/cms/?pid=1033198

On that page, about halfway down, see also the interactive link.

"Tiny Primordial Black Holes are a Viable Candidate for Dark Matter"

The above article addresses that issue in an easily digestible manner. As I understand it the evidence of dark matter is that the universe is accelerating in its expansion instead of slowing down as in the story Tau Zero.

:::a little editing, see below::

As I understand it the evidence of dark matter is that the universe is accelerating in its expansion

Isn't that the evidence for Dark Energy, rather than Dark Matter?

Good question JB, wish I knew the answer! I am just dabbling here - reading this and that.

4> Yes, the evidence for dark energy has to do with the way that stars orbit galaxies.

So "dark energy" .ne. "dark matter" via. E = mc Squared? or are the terms misleading?

ETA. If so, perhaps we should rename "Dark Energy" to 'Expansion Coefficient' (or what ever Albert called his biggest mistake.)
And "Dark matter" to "unknown attractor thingy :-)

>6 jjwilson61: Dark matter has to do with the way stars orbit galaxies I think, and dark energy has to do with the expansion rate of the universe. They are not the same.

Does "dark energy" theoretically derive from "dark matter" ? That might be repeating what Guido said, he's gone all math on me {not my best subject} ;-)

#9. No, the two appear to be separate. Dark matter is an unknown particle or family of particles that are only influenced by gravity and the weak force (and maybe not even the weak force which would make them virtually undetectable). Dark energy is is an unknown repulsive force which is accelerating the expansion of the universe and which is increasing in quantity as the universe expands. It may be the same as Einstein's cosmological constant which he formulated in his first theory of relativity but which he subsequently rejected.

>10 justifiedsinner:
Yes. Exactly!

Aha, I found a good explanation at NASA for the two concepts & thanks for pointing out my error. Dark Energy, Dark Matter