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Program archive
Apollo-Soyuz
Across five qualification and operational flights—two uncrewed Soviet tests, the crewed Soyuz 16 rehearsal, Soyuz 19, and Apollo—the Apollo-Soyuz Test Project developed and proved the first compatible international crewed docking system.
- Missions
- 5
- People
- 7
- Vehicles
- 13
Explore this program
Choose a path through the Apollo-Soyuz archive.
Apollo-Soyuz timeline
5 flights. One complete program record.
Follow every archived flight from the earliest development test through the program’s latest flown mission, with its defining milestones and mission hardware connected along the way.
Defining milestones
The turning points that shaped this program and its legacy.
1974 · First uncrewed qualificationCosmos 638The first modified Soyuz 7K-TM tested APAS-75 and joint-mission systems in orbit.Explore milestone →- 1974 · Second uncrewed qualificationCosmos 672A second test repeated the ASTP Soyuz systems qualification before a crew flew.Explore milestone →
- 1974 · Crewed dress rehearsalSoyuz 16Filipchenko and Rukavishnikov executed the Soviet joint-flight timeline without an Apollo partner present.Explore milestone →
- 1975 · Soyuz launches firstSoyuz 19Leonov and Kubasov established the rendezvous target for the approaching Apollo spacecraft.1-year leapExplore milestone →
- 1975 · First international dockingApollo-Soyuz Test ProjectApollo and Soyuz joined in orbit for crew exchanges, joint work, and a symbolic handshake.Explore milestone →
Every Apollo-Soyuz program record
All 5 flown and non-flight archive records arranged chronologically.
Launch corridor
5 flights and tests compressed into 1 expandable arc.
- Arc 01Ignition1974–1975 · 5 records
