page_title: Apollo–Soyuz
section_title: Commemorations
hierarchical_section_title: Apollo–Soyuz / Commemorations
caption_attribution_description: English: Soviet souvenir sheet issued in honor of the Soyuz-Apollo joint mission, 1975. Русский: Почтовый блок СССР, Союз-Аполлон, 1975.
context_page_description: Apollo–Soyuz was the first international space mission, carried out jointly by the United States and the Soviet Union in July 1975. Millions of people around the world watched on television as a United States Apollo module docked with a Soviet Union Soyuz capsule. The project, and its memorable handshake in space, was a symbol of détente between the two superpowers. It is generally considered to mark the end of the Space Race, which had begun in 1957 with the launch of Sputnik 1.
  The mission was officially known as the Apollo–Soyuz Test Project. In contrast, the US vehicle was unnumbered, as it was left over from the canceled Apollo missions; it was the last Apollo module to fly.
  The three United States and two Soviet Union astronauts performed both joint and separate scientific experiments, including an arranged eclipse of the Sun by the Apollo module to allow instruments on the Soyuz to take photographs of the solar corona. The pre-flight work provided useful engineering experience for later joint American–Russian space flights, such as the Shuttle–Mir program and the International Space Station.
context_section_description: The United States Postal Service issued the Apollo–Soyuz commemorative stamps, honoring the United States–Soviet link up in space, on 15 July 1975, the day of the launch.
  The remaining crew's most recent reunion was on 16 July 2010, when Leonov, Kubasov, Stafford, and Brand met at an Omega timepiece store in New York City. All except Leonov participated in a public roundtable that evening. Omega had produced several watches to be used on the mission.
caption: Soyuz–Apollo, Issue of 1975, USSR
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