Russian President Vladimir Putin (center) and Roscosmos chief Dmitry Rogozin (right) tour the VDNKh exhibition center in Moscow in April. Credit: Kremlin.ru WASHINGTON — The Russian government dismissed Dmitry Rogozin as the head of the space agency Roscosmos July 15, the same day the agency and NASA signed a long-anticipated agreement to exchange seats on flights to the International Space Statio