02/20/2014 - 12:33

In a paper published this week in the journal Physical Review Letters, MIT researchers propose an experiment that may close the last major loophole of Bell’s inequality — a 50-year-old theorem that, if violated by experiments, would mean that our universe is based not on the textbook laws of classical physics, but on the less-tangible probabilities of quantum mechanics.


10/31/2013 - 09:58

Most of the universe's heavy elements, including the iron central to life itself, formed early in cosmic history and spread throughout the universe, according to a new study of the Perseus Galaxy Cluster using Japan's Suzaku satellite.


12/30/2012 - 20:50

A collaboration with major participation by physicists at the University of Wisconsin-Madison has made a precise measurement of elusive, nearly massless particles, and obtained a crucial hint as to why the universe is dominated by matter, not by its close relative, anti-matter.

11/21/2012 - 16:24

A study using a unique new instrument on the world’s largest optical telescope has revealed the likely origins of especially bright supernovae that astronomers use as easy-to-spot “mile markers” to measure the expansion and acceleration of the universe.

10/24/2012 - 13:41

Could it be that dark matter "halos" — the huge, invisible cocoons of mass that envelop entire galaxies and account for most of the matter in the universe — aren't completely dark after all but contain a small number of stars? Astronomers from UCLA, UC Irvine and elsewhere make a case for that in the Oct. 25 issue of the journal Nature.

10/04/2012 - 14:17

Researchers have discovered a star that whips around the giant black hole at the center of our galaxy in record time, completing an orbit every 11.5 years. The finding, appearing today in the journal Science, points ahead to groundbreaking experiments involving Einstein's general theory of relativity. Those tests will be fully enabled by the Thirty Meter Telescope (TMT), slated to begin observations next decade.