The search for dark matter in an old underground gold mine in Lead is getting more sensitive as scientists have worked to rule out ways that dark matter would not interact with known particles, according to a news release from the Sanford Underground Research Facility.
While scientists increase their understanding of dark matter, they also will increase the size of the tank for the Large Underground Xenon (LUX) experiment, reports South Dakota Public Broadcasting. The tank is filled with chemicals that, scientists believe, will react with dark matter particles that might move through it.
Dark matter is thought to be the dominant form of matter in the universe. Scientists are confident in its existence because the effects of its gravity can be seen in the rotation of galaxies and in the way light bends as it travels through the universe.