Issued by the Soviet Union in 1984, this commemorative 45 kopeks stamp celebrates joint space research between the USSR and India. The design features the national flags of both countries, a rocket bearing the “Interkosmos” program name, satellites in orbit, and a large radio telescope. The Russian inscription “Сотрудничество в космосе” translates to “Cooperation in Space,” highlighting the partnership in exploring outer space. This issue is especially notable as it coincides with India’s first astronaut, Rakesh Sharma, traveling to space aboard Soyuz T-11 with Soviet cosmonauts. A key philatelic item marking Cold War–era international scientific collaboration.