A senior astrophysicist from NASA's Goddard Space Flight Center will regale guests of the University at Buffalo with a brief history of the universe. John Mather, a Nobel Prize-winning scientist who specializes in infrared astronomy and cosmology, will deliver the UB Department of Physics' 18th annual Moti Lal Rustgi Memorial Lecture on Friday, April 20 at 5 p.m. in 225 Natural Sciences Complex on UB's North Campus in Amherst, N.Y.