Secret to Dark Matter May Lie Under South Dakota
Large Underground Xenon experiment to be housed in town of Lead
By Newser Editors and Wire Services
Posted May 30, 2012 9:37 AM CDT
A sign warns visitors not to tap the glass of an above-ground version of the laboratory to be opened nearly 4,900 feet beneath the earth in Lead, S.D. Tuesday, May 29, 2012. The lab's experiments will...   (Amber Hunt)

(Newser) – Nestled nearly 5,000 feet beneath the Earth in the gold boom town of Lead, South Dakota, is a laboratory that could help scientists answer some pretty heavy questions about life, its origins, and the universe. Today part of the Homestake Gold Mine—opened in 1876 and shuttered in 2003—officially becomes an underground campus, home to the Large Underground Xenon experiment (LUX), the world's most sensitive dark-matter detector.

To date, scientists have never been able to directly observe dark matter, which makes up about 25% of the total mass-energy of the universe; people and planets make up just 4%. So the science community seized on the mine's closure. Dark matter is too sensitive to detect in normal labs, but one so far underground would help shield it from pesky cosmic radiation. Some 70 scientists and 14 institutions have worked together over the past four years to make the LUX experiment a reality, at a cost of more than $300 million. Experiments are set to begin this year. "2012 is going to be a very significant year because we get to turn the ... detector on and know very soon whether we have actually found dark matter or not," says one scientist.

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Comments
Showing 3 of 37 comments
Tology
May 31, 2012 4:05 AM CDT
So what is the whole point and reason to this waste of 300 million?
fractal
May 30, 2012 2:41 PM CDT
How the hell do they know that "people and plants" make up 4% of the energy/mass of the universe?
realtruth
May 30, 2012 2:08 PM CDT
And even if their $300 million discovers it.. Who cares.. Who is helped.. We will still have starving and sick people.. Medical reasearch will still go Unfunded.. Schools will still fail to teach.... A BIG Waste of money and Scientifc energy...