By Air (Round 2)
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Gagarin: Yuri's 17,000-mph lap around the earth finished with the cosmonaut ejecting and parachuting 20,000 feet in his spacesuit. Lindbergh's post-cross-the-pond career, meanwhile, was marked mostly by xenophobia, anti-Semitism, and secret children by German mistresses.

Fossett: Those claims Byrd made about flying to the North Pole that garnered him the Congressional Medal of Honor? Turns out they were kind of contradicted by the capabilities of his aircraft, the laws of physics, and, well, the man's own diary, discovered in 1996. Fossett advances thanks to a DQ.