CNN Here's a look at NASA spaceflight programs in the United States and around the world.
The United States ended its space shuttle program with the launch of Atlantis on July 8, 2011 and landing on 21 July 2011.
Both India and Iran have announced their plans to send a crewed spacecraft into space.
April 12, 1961 - Vostok 1 is the first human in space aboard Soviet cosmonaut Yuri Gagarin. He spends 108 minutes in space and makes one orbit around earth.
May 5, 1961 - Project Mercury astronaut Alan B. Shepard is the first US citizen in space aboard Freedom 7. He spends 15 minutes in a sub-orbital flight.
June 16, 1963 - Soviet cosmonaut Valentina Vladimirovna Tereshkova is the first woman to travel aboard Vostok for the first time in space. She spends seven hours in space and orbits the Earth 48 times.
March 18, 1965 - Soviet Alexei Leonov is the first man to walk in space.
June 3, 1965 - Ed White becomes the first American to walk in space during Gemini 4.
April 1971 - Salyut, a crewed orbiting space lab, is launched by the Soviet Union.
April 18 - May 1983 - Sally Ride is the first American woman in space aboard STS - 7 Mission.
August 29, 1998 - Glenn, at 77, becomes the oldest human to go into space on the Space Shuttle Discovery.
October 15, 2003 - Shenzhou 5 is the first Chinese man into space aboard Yang Liwei.
July 21, 2011 - The finite operation of the 135th space shuttle mission ends the US space shuttle program.
June 2012 - China plans to launch the Tiangong 9, carrying three transatlantic astronauts on course to rendezvous with Shenzhou - 1, a mini-space station, in their first space docking venture. Two crews prepare for the mission, each with a female crewman; Major Liu Wang and Captain Wang Yaping, both Air Force fighter pilots.
June 16, 2012 - Liu Wang launches Shenzhou 9 with a crew of three, Liu Wang, Jing Haipeng and Liu Yang, from the launchpad of Jiuquan Satellite Launch Center in western Gansu province. Liu Wang is the first female taikonaut to go into space with no teammate.
August 2, 2020 - SpaceX's Crew Dragon spacecraft splashed into the Gulf of Mexico, ending a historic two-month mission. This is the first time in history a commercial spacecraft has carried humans into Earth's orbit.