BluesBud BluesBud:
Mmm . . .ok, I'll try to give the 'Quantum Physics for Dummies' version. But, don't look for 'logic' when it comes to Quantum Mechanics.

It's usually the opposite of what you expect.
There was this guy, Schrodinger, and he devised a 'thought experiment' to show the inherent flaw in an interpretation of Quantum Physics called the 'Copenhagen interpretation'.
http://en.wikipedia.org/wiki/Schrodingers_cat
Put a cat in a box, along with a poison that is released by the radioactive decay of an element, so that sometime in the next hour, the poison is released. His thought experement said that until you look in the box, the cat is nether dead nor alive, but both (and nether). By opening the box, you 'collapse' the wave function into one probablilty or the other.
I think this article and others like it are misinterpreted. (eg:
http://www.telegraph.co.uk/earth/main.j ... tviewedbox)
In Quantum Physics, you cannot measure any particle without changing it. If you measure the speed of a photon, you have to use another particle to do it, and thereby change the thing you are measuring. You can only describe particle paths, velocities etc. as 'probabilities' because of this. If you measure them, you can say what it 'was', not what it 'is'.
'Waveform collapse' therefore applies to quantum probabilities, not long-distance observations. You cannot change what already happened billions of light years ago, and light years away.
These articles are saying that because we observed 'Dark matter' billions of light years away . . .
http://news.bbc.co.uk/2/hi/science/nature/5272226.stm
. . .and because we believe without the missing gravity that Dark Matter provides to our understanding of the universe, that we may have destroyed the dark matter simply by observing it. (that is, it was in a state of near collapse already, but our observation of it sealed it's fate) And thus, we doomed the universe to a 'heat death' and eternal expansion simply by finding the dark matter.
I don't buy it, of course. Even though the 'observer' can change experimental results in ways we are just finding out, having those photons reach earth and not being observed, they still would have been changed by interaction with the Earth (and still are being changed). We made no difference to the universe by observing it.