April 17, 1970 — The astronauts of Apollo 13 make it home, safe and sound.
Pad 39 launch complex warning lights during the Apollo era, including signage for the un-built Pad C.
An ecliptic sun illustrated Astronomicum Caesareum, 1540, by Petrus Apianu, aka Peter Apian (1495-1552).
Gemini 3 astronauts Gus Grissom (left) and John Young prior to launch in March 1965. (NASA)