Liftoff - Apollo-Soyuz Test Project (ASTP) - KSC S75-28547 (15 July 1975) --- The Apollo-Soyuz Test Project's (ASTP) NASA Apollo/Saturn 1B space vehicle is launched from Pad B, Launch Complex 39, Kennedy Space Center (KSC), Florida, at 3:50 p.m. (EDT), July 15, 1975, to begin Apollo's catch-up journey toward the already Earth-orbiting Soviet Soyuz spacecraft. Aboard the Apollo spacecraft were astronauts Thomas P. Stafford, Vance D. Brand and Donald K. (Deke) Slayton.