October 11, 1984, Kathryn Dwyer “Kathy” Sullivan became the first American woman astronaut during the STS-41-G mission to perform an EVA or an extravehicular activity (3.5 hours worth), which freely translates to a “space walk”. This was NASA‘s thirteenth flight in the Space Shuttle program and the sixth flight of the Challenger. She was the Mission Specialist 1 and had just turned 33 years of age eight days prior.
She received a Ph.D. in geology from Dalhousie University in 1978, became an Adjunct Professor of Geology at Rice University in 1985 and joined the Navy Reserves in 1988 as an Oceanography Officer, retiring after 18 years at the rank of Captain.
April 24, 1990, she served on board the Space Shuttle Discovery as a Mission Specialist 3 for the STS-31 mission that launched the Hubble Space Telescope. March 24, 1992, she served as Mission Specialist 1 during the STS-45 mission on board the Space Shuttle Atlantis. She was part of the Group 8 NASA Astronaut selection on January 16, 1978. She left NASA in 1993.
Other October 11 space-related trivia: