Apollo-Soyuz

In 1972, the United States and the Soviet Union reached an agreement to take part in a joint venture in space. That agreement was fulfilled in 1975, when an American spacecraft launched from Florida and a Soviet craft launched in Kazakhstan, and the two came together in space.

According to the museum, "The Apollo-Soyuz test project marked a brief thaw in the Cold War and the first time that the two rivals cooperated in a manned space mission."

Over the course of the project, the crews from the two spacecraft visited each others' vessels, ate together and worked on joint projects.

Click here to read the related story on the Smithsonian National Air and Space Museum and click here to check out the entire Road Trip 2010 package.