mass concentrations there, which had affected Apollo8's orbit. According to French and Burgess in their study of the Apollo Program, "In any event,... Apollo9's success had ensured that the next Apollo mission would go back to the moon." See also List of spacewalks and moonwalks 1965–1999 Notes References Bibliography External links NASA reports "Apollo 9 flight plan AS-504/CSM-104/LM-3 Final Report" (PDF) by J. V. Rivers, NASA, February 1969 "Apollo Program Summary Report" (PDF), NASA, JSC-09423, April 1975 Multimedia Apollo 9: Three To Make Ready Official NASA documentary film (1969) Apollo 9 16mm onboard film part 1, part 2 raw footage taken from Apollo 9 Apollo 9: The Space Duet of Spider & Gumdrop Official NASA documentary film (1969), Apollo 9 images at NASA'S Kennedy Space Center Extravehicular activity Human spaceflights Apollo 09 1969 in the United States Spacecraft launched in 1969 Spacecraft which reentered in 1969 March 1969 events Spacecraft launched by Saturn rockets James McDivitt David Scott Rusty Schweickart