Dark matter hunt deepens at Ont. mine

Researchers from Canada, the U.S. and Europe have recently set up new experiments at SNOLAB(Sudbury Neutrino Observatory), located two kilometres underground near Sudbury, Ont. they are trying to figure out the composition of dark matter — invisible mass that makes up at least 25% of the universe. To make dark matter show itself, They are using a four-kilogram dark matter particle detector,called the bubble chamber and running it remotely. Scientists think dark matter is made up of a theoretical type of subatomic particle called a weakly interacting massive particle (WIMP). WIMPs don't have any electrical charge and only interact with other particles by gravity. That makes them very difficult to detect. Physicists believe there are so many of these particles that, occasionally, they should crash into the nucleus of an atom and create a detectable signal. The problem is, the tiny, faint signal would be drowned out by the roaring din of signals generated by cosmic radiation at the surface of the Earth. That's why they are doing the experiment underground-the level of cosmic rays is reduced 10 millionfold

This is a great experiment on the same scale as the super-collider in switzerland. It must be an unbelievable facility and i would love to see the computers they are using. If the facility can prove the existence of dark matter it would be a great step forward in physics and Canada would be recognized internationally. I will follow this story with great interest.