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Robert Hutchings Goddard

Born: 1882Birthplace: Worcester, Mass. Control mechanism for rocket apparatus—Goddard launched the first liquid-fuel rocket in 1926. Other rocket design developments led to the bazooka and rocket-…

Robert N. Hall

Born: 1919Birthplace: New Haven, Conn. High-voltage, high-power semiconductor pin rectifier—Hall's invention boosted efficiency and reduced wasted power and destructive heat build-up in large-scale…

Robert S. Ledley

Born: 1926Birthplace: New York City Diagnostic x-ray systems—Ledley developed the ACTA diagnostic x-ray scanner, the first whole-body computerized tomography (CT) machine. He was the first to do…

Robert Downey, Jr.

actorBorn: 4/4/1965Birthplace: New York City Talented actor who has battled personal demons as he has worked to establish himself as one of Hollywood's finest actors. His portrayal of tormented…

Robert De Niro

actorBorn: 8/17/1943Birthplace: New York City Academy Award-winning actor known for his demanding, tough-guy roles in Martin Scorsese films. His films include The Godfather Part II (1974), Raging…

Dr. Robert Jackson

Born: Aug. 6, 1932Surgeon revolutionized sports medicine by popularizing the use of arthroscopic surgery to treat injuries; learned technique from Japanese physician that allowed athletes to return…