Human spaceflight

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Human spaceflight

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Artículo WikipediaFuente Dbpedia

Human spaceflight (e.g. manned spaceflight) is space travel with humans aboard spacecraft. When a spacecraft is manned, it can be piloted directly, as opposed to machine or robotic space probes controlled remotely by humans or through automatic methods on board the spacecraft.Humans have been continually present in space for 700113000000000000013 years and 7002270000000000000270 days on the International Space Station. The first manned spaceflight was launched by the Soviet Union on 12 April 1961 as a part of the Vostok program, with cosmonaut Yuri Gagarin aboard.Since 2011 Russia and China maintain human spaceflight capability independent of international cooperation. The friendship between Russia and the United States was so successful that the United States has been using the Russian capability in between the retirement of its Space Shuttle and its planned capabilities such as Orion. As of 2013, human spaceflights are only launched by the Soyuz program conducted by the Russian Federal Space Agency and the Shenzhou program conducted by the China National Space Administration. The United States lost human spaceflight launch capability upon retirement of the space shuttle in 2011.In recent years there has been a gradual movement towards more commercial means of spaceflight. The first private human spaceflight took place on 21 June 2004, when SpaceShipOne conducted a suborbital flight. A number of non-governmental startup companies have sprung up, hoping to create a space tourism industry. NASA has also tried to stimulate private spaceflight through programs such as Commercial Crew Development (CCDev) and Commercial Orbital Transportation Services (COTS). With its 2011 budget proposals released in 2010, the Obama administration moved towards a model where commercial companies would supply NASA with transportation services of both crew and cargo to low Earth orbit. The vehicles used for these services would then serve both NASA and potential commercial customers. NASA intended to spend $6 billion in the coming years to develop commercial crew vehicles, using a model similar to that used under COTS.

Wikipedia Inglés http://en.wikipedia.org/wiki/Human_spaceflight

Wikipedia Español http://es.wikipedia.org/wiki/Vuelo_espacial_tripulado

Enlaces externos relacionado http://solarsystem.nasa.gov http://solarsystem.nasa.gov/missions/profile.cfm?MCode=Human_Spaceflight http://spaceflight.nasa.gov/ http://www.nasaconstellation.com http://www.spaceflighthistory.com