Excitement is high in the science community due to a possible dark matter discovery. Dark matter is thought to explain how the universe works, but it has never been identified. Researchers have been searching for decades, including those at the SLAC National Accelerator Laboratory.

They are cautious, noting that it is early and they are looking for something invisible. If the discovery is confirmed, it could open up new areas of science.

Further details on the possible breakthrough are available, including a video report from NBC Bay Area's Scott Budman.