Brian Schmidt is an American astrophysicist known for his work in the fields of cosmology and the study of the accelerating expansion of the universe. He was awarded the Nobel Prize in Physics in 2011, sharing the prize with Saul Perlmutter and Adam Riess, for their discovery of the acceleration of the universe's expansion through observations of distant supernovae.
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An astronomer at the Australian National University studying supernovae.[ref]
Professional profile of Brian Schmidt (reporter.anu.edu.au). Independent professional identity
Portrait of Brian Schmidt
. Tim Wetherell. CC BY-SA 3.0, via Wikimedia Commons. Source.