American astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko participated in a one-year mission aboard the International Space Station (ISS). Twice as long as a typical crew, the effort was to learn more about the effects of microgravity on the human body.
During the summer of 1965, the United States began to pull even in the space race with the Soviet Union. The eight-day Gemini V endurance mission doubled America’s spaceflight record set two months earlier. It also tested technology that would help make longer missions possible in the future.
The first elements of the International Space Station now have been in orbit for more than 20 years. Assembly of the largest spacecraft ever built was a global, cooperative effort and began with the STS-88 space shuttle mission in December 1998.