The first American to walk in space, Edward Higgins “Ed” White, was born on November 14th 1930, in San Antonio, Texas.
The son of a distinguished USAF major general, it was probably obvious from an early age that flying would figure big in his career, and after graduating from West Point in 1952 he joined the Air Force as a 2nd Lieutenant. After a spell at Bitburg Air Force Base in West Germany, he gained a masters degree in aeronautical engineering and became a test pilot at Wright-Patterson AFB near Dayton, Ohio, rising to the rank of lieutenant colonel.
White was part of NASA’s 1962 second group of nine astronauts, and was quickly chosen to be the pilot of Gemini 4, and the first American to conduct an EVA (extra-vehicular activity) on June 3rd, 1965. I have to add the word “American” because, as with so many firsts in the space race, the Russians had just pipped them to the post with Alexey Leonov, who spent 12 minutes outside the Voskhod 2 spacecraft, on March 18th. Unsurprisingly, White had to be ordered back inside his craft from the ground, as he was reluctant to end the experience.
At the start of the Apollo program, White was a fairly obvious choice to be part of the first manned flight, but on February 21st, 1967, when he, along with Gus Grissom and Roger Chaffee, entered Apollo 1 for a launch rehearsal, three weeks before the planned launch date, a fire broke out in the cabin, killing all three.
1969 ⇒ Launch of Apollo XII, the second manned Moon landing (Conrad, Bean and Gordon).
2003 ⇒ Discovery of trans-Neptunian object 90377 Sedna by Mike Brown, Chad Trujillo, and David Rabinowitz, using the Palomar Quest camera.