The 'Genius' of Albert Einstein on Nat Geo Channel (Photos)

Johnny Flynn stars as young Albert Einstein in National Geographic’s “Genius.”

Albert Einstein (Geoffrey Rush) contemplates the nature of light in National Geographic’s “Genius.”

Emily Watson stars as Elsa, Einstein’s second wife (and first cousin) in National Geographic’s “Genius.” Einstein married Elsa in Berlin in 1918. She came with him when he fled to the U.S. in 1933 but died only two months thereafter.

Albert Einstein (Geoffrey Rush) with his wife Elsa Einstein (Emily Watson) greet a crowd of people in the street in National Geographic’s “Genius.”

Geoffrey Rush stars as Albert Einstein in National Geographic’s “Genius.”

Johnny Flynn stars as young Albert Einstein in National Geographic’s “Genius.”

Geoffrey Rush reenacts the famous photo of Albert Einstein sticking out his tongue. The original was taken by Arthur Sasse on March 14, 1951 — Einstein’s 72nd birthday.