Searching for a twist in neutron spin axis, physicists find nothing—and that's something
Thursday, March 7, 2013 - 07:30
in Astronomy & Space
(Phys.org) —Besides understanding how much dark matter and dark energy there is—about 95 percent of the universe—scientists also want to know more about what dark matter and dark energy are not, as opposed to what they are. Indiana University's Mike Snow, a nuclear physicist who specializes in precision measurements using low energy neutrons, now has another "what they are not" to add to the list.