Original: Initial research George Smoot then switched to cosmology, and went to Lawrence Berkeley National Laboratory where he collaborated with Luis Walter Alvarez on the experiment HAPPE, a stratospheric balloon for the detection of antimatter in the upper atmosphere, which was predicted by the now obscure steady state theory of cosmology.
Simplified: Early research Professor Smoot began to study cosmology, and went to Lawrence Berkeley National Laboratory where he worked with Luis Walter Alvarez on the experiment HAPPE, a high up weather balloon for detecting antimatter in the upper atmosphere.