February will be the 20th anniversary of the nearest and brightest supernova humans have seen in 400 years. Called SN1987A, it burned for weeks in the Large Magellanic Cloud, and provided astronomers with new information that forced them to rethink theories of how massive stars explode. Now a UC Berkeley astronomer says that theory needs rethinking again.<br><br><a href='http://www.berkeley.edu/news/media/releases/2007/01/09_LBV.shtml' target='_blank'>http://www.berkeley.edu/news/media/releases/2007/01/09_LBV.shtml</a><br><br>