Preparation of a joint space flight under the Soyuz-Apollo program

USSR. Moscow Region. Star City. 1973. Heroes of the Soviet Union, USSR pilot-cosmonauts Alexei Arkhipovich Leonov (left) and Valery Nikolaevich Kubasov during preparations for the joint Soviet-American experimental flight Soyuz - Apollo at the Yuri Gagarin Cosmonaut Training Center. The exact date of the photo is unknown. Albert Pushkarev/TASS