Oddball stars explained
September 17, 2009New observations solve longstanding mystery of tipped rotation. In addition to shedding light on how binary stars form, the explanation knocks down a possible challenge to Einstein's theory of relativity.
The hunt for dark matter
September 17, 2009MIT physicists are working on new detectors that may, at last, help them find the elusive particles thought to constitute up to a quarter of the universe.