ASTROPHYSICS:
New Extrasolar Planets Hint at More to Come
Charles Seife
On 29 March, NASA announced that astronomers had bagged two new planets that circle other stars. Less massive than Saturn, the objects are the smallest extrasolar planets yet found--proof that astronomical techniques are now sensitive enough that scientists could spot our own solar system from afar. The discovery has sparked hopes that glimpses of even smaller planets are soon to come.