Three Astrophysicists Honored
The 2011 Nobel Prize in Physics was awarded «for the discovery of the accelerating expansion of the Universe through observations of distant supernovae» with one half to APS Fellow, Saul Perlmutter (Lawrence Berkeley National Laboratory/UC-Berkeley), and the other half jointly to Brian P. Schmidt (Australian National University) and APS member Adam G. Riess (Johns Hopkins University).
More info in : http://www.nobelprize.org/nobel_prizes/physics/laureates/2011/press.html
Source: http://www.aps.org/