Astronomers from the High-z Supernova Search Team and the Supernova Cosmology Project used the telescope to observe distant supernovae and uncovered evidence that, far from decelerating under the influence of gravity, the expansion of the universe may in fact be accelerating.. 
Very different from a scaled-up Hubble, it is designed to operate Colder and Farther away from the earth at the l2 LaGrangian point, where ther and Optical interference from the earth and moon are lessenedned.. 