Cosmic Collisions Reveals Dark Matter.

New observations of a great big cosmic collision provide the best
evidence yet that invisible and mysterious dark matter really does
exist.

The collision, between two huge clusters of galaxies, is the "most
energetic cosmic event, besides the Big Bang, that we know about,"
said Maxim Markevitch of the Harvard-Smithsonian Center for
Astrophysics in Cambridge, Mass.

The impact split normal matter and dark matter apart, rendering
the dark matter's gravitational presence observable.

"A universe that's dominated by dark stuff seems preposterous,
so we wanted to test whether there were any basic flaws in our
thinking," said Doug Clowe of the University of Arizona at Tucson,
and leader of the study.
"These results are direct proof that dark matter exists."


SOURCE:
Space.com

I think this is a very exciting event/discovery.
With this, I can think of atleast one Hypothetical that can
be upgraded to a theory.


Comments, Opinions?

some more info here on the bbc link

seems there is still a huge amount of work to be done though and that they are only just scratching the surface of the prospects that this find may open?

they say that a galaxy is heading towards us

Yes, the Andromeda galaxy, which is the closest galaxy
to our own, and our galaxy will eventually collide,
but that won't be for billions of years.