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Details for log entry 4,156,966
20:48, 31 January 2011: 67.134.17.250 (talk) triggered filter 325, performing the action "edit" on Human spaceflight. Actions taken: Disallow; Filter description: !!!!! in the article-space (examine)

Changes made in edit

REC IS AWESOME!!!!!!

[[Image:Astronaut Edward White first American spacewalk Gemini 4.jpg|thumb|300px|[[Edward Higgins White|Edward White]] on a [[spacewalk]] during the [[Gemini 4]] mission]]

HE WAS THE FIRST AND ONLY PERSON WHO WALKED ON EVERY PLANET AND STAR IN THE GALAXIE!

'''Human spaceflight''' is [[spaceflight]] with a [[Astronaut|human crew]] and possibly passengers. This makes it unlike [[Robotic spacecraft|robotic]] [[space probe]]s or remotely-controlled [[satellite]]s. Human spaceflight is sometimes called '''[[Human resources|manned]] spaceflight''', a term now deprecated by major space agencies in favor of its [[Gender-neutral language in English|gender-neutral]] alternative.


The first human spaceflight was accomplished on [[Cosmonautics Day|April 12, 1961]] by [[Soviet]] cosmonaut [[Yuri Gagarin]]. The only countries to have independent human spaceflight capability are [[Russia]], [[United States]] and [[People's Republic of China|China]]. As of 2010, human spaceflights are being actively launched by the [[Soyuz programme]] conducted by the [[Russian Federal Space Agency]], the [[Space Shuttle program]] conducted by [[NASA]], and the [[Shenzhou program]] conducted by the [[China National Space Administration]].


The US will lose governmental human spaceflight launch capability upon retirement of the [[Space Shuttle]], expected in 2011. Under the Bush administration, the [[Constellation program]] included plans for canceling the Shuttle and replacing it with the capability for spaceflight beyond low Earth orbit. In the [[2011 United States federal budget]], the Obama administration proposed canceling Constellation. Under the new plan, NASA would rely on transportation services provided by the private sector, such as [[Space X]]'s [[Falcon 9]]. The period between the retirement of the Shuttle and the initial operational capability of new systems (either Constellation or the new commercial proposals), similar to the gap between the cancellation of [[Apollo program|Apollo]] and the [[STS-1|first Space Shuttle flight]], is often referred to as the human spaceflight gap.


In recent years there has been a gradual movement towards more commercial forms of spaceflight. A number of non-governmental [[startup companies]] have sprung up in recent years, hoping to create a [[space tourism]] industry. For a list of such companies, and the spacecraft they are currently building, see [[List of private spaceflight companies]]. 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 early February 2010,<ref>{{Cite web|url=http://www.nasa.gov/news/budget/index.html|title=FY 2011 Budget}}</ref> the Obama administration is moving 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 intends to spend $6 billion in the coming years to develop commercial crew vehicles, using a model similar to that used under COTS.<ref>{{Cite web|url=http://www.nasa.gov/pdf/428356main_Exploration.pdf|title=Mission Directorate: Exploration Systems|format=PDF}}</ref>


==History==

{{Main|History of spaceflight}}


===First human spaceflights===

[[File:Yuri Gagarin 140-190 for collage (new).jpg|thumb|upright|left|[[Yuri Gagarin]], the first man in space, in his [[space suit]] during the [[Vostok 1]] mission]]


The first human spaceflight took place on April 12, 1961, when [[cosmonaut]] [[Yuri Gagarin]] made one orbit around the Earth aboard the [[Vostok 1]] spacecraft, launched by the [[Soviet space program]] and designed by the rocket scientist [[Sergey Korolyov]]. [[Valentina Tereshkova]] became the first woman in space on board [[Vostok 6]] on June 16, 1963. Both spacecraft were launched by [[Vostok 3KA]] launch vehicles. [[Alexei Leonov]] made the first [[spacewalk]] when he left the [[Voskhod 2]] on March 8, 1965. [[Svetlana Savitskaya]] became the first woman to do so on July 25, 1984.


[[File:Aldrin Apollo 11.jpg|thumb|[[Buzz Aldrin]] on the surface of the [[Moon]] during [[Apollo 11]]]]


The [[United States]] became the second nation to achieve manned spaceflight, with the suborbital flight of [[astronaut]] [[Alan Shepard]] aboard ''[[Freedom 7]]'', carried out as part of [[Project Mercury]]. The spacecraft was launched on May 5, 1961 on a [[Mercury-Redstone Launch Vehicle|Redstone rocket]]. The first U.S. orbital flight was that of [[John Glenn]] aboard ''[[Friendship 7]]'', which was launched February 20, 1962 on an [[SM-65D Atlas|Atlas]] rocket. Since 1981 the U.S. has conducted all its human spaceflight missions with reusable [[Space Shuttle]]s. [[Sally Ride]] became the first American woman in space in 1983. [[Eileen Collins]] was the first female Shuttle pilot, and with Shuttle mission [[STS-93]] in July 1999 she became the first woman to command a U.S. spacecraft.


The [[People's Republic of China]] became the third nation to achieve human spaceflight when [[Yang Liwei]] launched into space on a Chinese-made vehicle, the [[Shenzhou 5]], on October 15, 2003. The flight made China the third nation to have launched its own manned spacecraft using its own launcher. Previous European ([[Hermes (shuttle)|Hermes]]) and Japanese ([[HOPE-X]]) domestic manned programs were abandoned after years of development, as was the first Chinese attempt, the [[Shuguang spacecraft]].


The farthest destination for a human spaceflight mission has been the [[Moon]]. The only missions to the Moon have been those conducted by [[NASA]] as part of the [[Apollo program]]. The first such mission, [[Apollo 8]], orbited the Moon but did not land. The first Moon landing mission was [[Apollo 11]], during which—on July 20, 1969—[[Neil Armstrong]] and [[Buzz Aldrin]] became the first people to set foot on the Moon. Six missions landed in total, numbered Apollo 11–[[Apollo 17|17]], excluding [[Apollo 13]]. Altogether twelve men walked on the Moon, the only humans to have been on an extraterrestrial body. The Soviet Union discontinued its program for lunar orbiting and landing of human spaceflight missions on June 24, 1974 when [[Valentin Glushko]] became General Designer of [[NPO Energiya]].<ref>

{{cite book|title = Challenge To Apollo The Soviet Union and The Space Race, 1945-1974|last = Siddiqi|first = Asif|pages = 832|publisher = NASA|url = http://ntrs.nasa.gov/search.jsp?Ntk=all&Ntx=mode%20matchall&Ntt=SP-2000-4408}}</ref>


The longest single human spaceflight is that of [[Valeriy Polyakov]], who left earth on January 8, 1994, and didn't return until March 22, 1995 (a total of 437 days 17 hr. 58 min. 16 sec. aboard). [[Sergei Krikalyov]] has spent the most time of anyone in space, 803 days, 9 hours, and 39 seconds altogether. The longest period of continuous human presence in space lasted as long as 3,644 days, eight days short of 10 years, spanning the launch of [[Soyuz TM-8]] on September 5, 1989 to the landing of [[Soyuz TM-29]] on August 28, 1999.


For many years beginning in 1961, only two countries, the USSR (later [[Russia]]) and United States, had their own astronauts. Citizens of other nations flew in space, beginning with the flight of [[Vladimir Remek]], a [[Czech Republic|Czech]], on a Soviet spacecraft on March 2, 1978. {{As of|2010}}, citizens from 38 nations (including [[space tourism|space tourists]]) have flown in space aboard Soviet, American, Russian, and Chinese spacecraft.


==Space programs==


As of 2010, human spaceflight missions have been conducted by the former [[Soviet Union]]/([[Russia]]), the [[United States]], the [[People's Republic of China]] and by the [[private spaceflight]] company [[Scaled Composites]].<!-- chronological order -->


Several other countries and space agencies have announced and begun human spaceflight programs by their own technology, including [[India]] ([[ISRO]]), [[Ecuador]] ([[Ecuadorian Civilian Space Agency|EXA]]), [[Japan]] ([[JAXA]]), [[Iran]] ([[Iranian Space Agency|ISA]]) and [[Malaysia]] ([[Malaysian National Space Agency|MNSA]]).


[[File:Human spaceflight.svg|thumb|400px|right|Countries which have human spaceflight agendas.]]


Currently the following [[spacecraft]] and [[spaceport]]s are used for launching human spaceflights:

*[[Soyuz spacecraft|Soyuz]] with [[Soyuz (rocket family)|Soyuz rocket]]—[[Baikonur Cosmodrome]]

*[[Space Shuttle]]—[[Kennedy Space Center]]

*[[International Space Station]] (ISS)—Assembled in orbit; crews transported by the previous two spacecraft<!--The launch history of ISS components -- which on Shuttle; which on Proton -- should be adequately covered in the ISS articles. -->

*[[Shenzhou spacecraft]] with [[Long March rocket]]—[[Jiuquan Satellite Launch Center]]


Historically, the following spacecraft and [[spaceport]]s have also been used for human spaceflight launches:

*[[Vostok spacecraft|Vostok]]—Baikonur Cosmodrome

*[[Project Mercury|Mercury]]—[[Cape Canaveral Air Force Station]]

*[[Voskhod spacecraft|Voskhod]]—Baikonur Cosmodrome

*[[X-15]]—[[Edwards Air Force Base]],<ref>

{{cite web|url = http://www.nasa.gov/centers/dryden/news/FactSheets/FS-052-DFRC.html|title = X-15 Hypersonic Research Program|publisher = NASA}}</ref> (two internationally recognized suborbital flights in program)

*[[Project Gemini|Gemini]]—Cape Canaveral Air Force Station

*[[Apollo spacecraft|Apollo]]—Kennedy Space Center (Apollo 7 at Cape Canaveral Air Force Station)

*[[Salyut]] space station—Baikonur Cosmodrome

*[[Almaz]] space station—Baikonur Cosmodrome (Almaz was a series of military space stations under cover of the civilian name Salyut)

*[[Skylab]] space station—Kennedy Space Center

*[[Mir]] space station—Baikonur Cosmodrome

*[[SpaceShipOne]] with [[Scaled Composites White Knight|White Knight]]—[[Mojave Spaceport]]


Numerous private companies attempted human spaceflight programs in an effort to win the $10 million [[Ansari X Prize]]. The first private human spaceflight took place on June 21, 2004, when [[SpaceShipOne]] conducted a suborbital flight. SpaceShipOne captured the prize on October 4, 2004, when it accomplished two consecutive flights within one week. [[SpaceShipTwo]], launching from the carrier aircraft [[Scaled Composites WhiteKnightTwo|White Knight Two]], is planned to conduct regular suborbital space tourism.


Most of the time, the only humans in space are those aboard the ISS, whose crew of six spends up to six months at a time in [[low Earth orbit]].


[[NASA]] and [[ESA]] now use the term "human spaceflight" to refer to their programs of launching people into space. Traditionally, these endeavors have been referred to as "manned space missions."


{{Human Spaceflight Timeline}}


==National spacefaring attempts==


{{Notice|This section list all nations which have developed the technologies to travel into space. This should not to be confused with [[List of space travelers by nationality|nations with citizens who have traveled into space]] including space tourists, flown or intended to fly by foreign country's or non-domestic private space systems – these do NOT count as national spacefaring attempts.}}


: Successfully executed manned programs are in '''bold'''.

: [[Sub-orbital spaceflight|Suborbital]] spaceflights are in ''italics''.


{| class="wikitable"| border=2 cellpadding="4" cellspacing="0" style="margin: 1em 1em 1em 0; border: 1px #aaa solid; border-collapse: collapse; font-size: 95 %;"

|- bgcolor="#f9f9b0"

! Nation/Organization

! Space agency

! National term

! First launched astronaut

! Date

! Spacecraft

! Launcher

|-

| '''{{Flag|Soviet Union}}'''

| '''[[Soviet space program]]<br />([[OKB-1|OKB-1 Design Bureau]])'''

| '''космонавт&nbsp;{{ru icon}}<br />''kosmonavt''

| '''[[Yuri Gagarin]]'''

| '''April 12, 1961'''

| '''[[Vostok spacecraft]]'''

| '''[[Vostok rocket|Vostok]]'''

|-

| '''''{{Flag|United States}}'''''

| '''''[[NASA|National Aeronautics and Space Administration (NASA)]]'''''

| '''''astronaut'''''

| '''''[[Alan Shepard]]'''''

| '''''May 5, 1961'''''

| '''''[[Mercury spacecraft#Spacecraft|Mercury spacecraft]]'''''

| '''''[[Mercury-Redstone Launch Vehicle|Redstone]]'''''

|-

| {{Flag|China}}

| [[China space program]]

| 宇航员 {{zh icon}}<br />''yǔhángyuán''<br />航天员 {{zh icon}}<br />''hángtiānyuán''

| ...

| 1973 (abandoned)

| [[Shuguang spacecraft|Shuguang 1]]

| [[Long March 2A]]

|-

| {{Flag|China}}

| [[China space program]]

| 宇航员 {{zh icon}}<br />''yǔhángyuán''<br />航天员 {{zh icon}}<br />''hángtiānyuán''

| ...

| 1981 (abandoned)

| [[Fanhui Shi Weixing|Piloted FSW]]

| [[Long March 2]]

|-

| {{Flagicon|European Union}} [[ESA]]

| [[CNES]] / [[European Space Agency|European Space Agency (ESA)]]

| ''spationaute'' {{Fr icon}}<br />astronaut

| ...

| 1992 (abandoned)

| [[Hermes (shuttle)|Hermes]]

| [[Ariane V]]

|-

| {{Flag|Iraq|1991}}<ref>According to a press-release of Iraqi News Agency of December 5, 1989 about the first (and last) test of the [[Tammouz rocket|Tammouz]] space launcher, [[Iraq]] intended to develop manned space facilities by the end of the century. These plans were put to an end by the [[Gulf War]] of 1991 and the economic hard times that followed.</ref>

| ...

| رجل فضاء {{ar icon}}<br />''rajul faḍāʼ''<br />رائد فضاء {{ar icon}}<br />''rāʼib faḍāʼ''<br />ملاح فضائي {{ar icon}}<br />''mallāḥ faḍāʼiy''

| ...

| 2001 (abandoned)

| ...

| [[Tammouz rocket|Tammouz 2 or 3]]

|-

| {{Flag|Japan}}

| [[National Space Development Agency of Japan|National Space Development Agency of Japan (NASDA)]]

| 宇宙飛行士 {{ja icon}}<br />''uchūhikōshi''

| ...

| 2003 (abandoned)

| [[HOPE-X]]

| [[H-II]]

|-

| {{Flag|China}}

| '''[[China National Space Administration|China National Space Administration (CNSA)]]'''

| '''太空人 {{zh icon}}<br />''tàikōng rén''<br />宇航员 {{zh icon}}<br />''yǔhángyuán''<br />航天员 {{zh icon}}<br />''hángtiānyuán'''''

| '''[[Yang Liwei]]'''

| '''October 15, 2003'''

| '''[[Shenzhou (spacecraft)|Shenzhou spacecraft]]'''

| '''[[Long March 2F]]'''

|-

| {{Flag|India}}

| [[Indian Space Research Organisation|Indian Space Research Organisation (ISRO)]]

| vyomanaut<br /> gaganaut<br />''aakashagaami''<br />आकाशगामि: &nbsp;{{Sa icon}}<br />''brahmāndagaami''<br /> ब्रह्मान्डगामि: &nbsp;{{Sa icon}}<br />''antarikshyaatri''<br />अन्तरिक्षयात्रि:&nbsp;{{Sa icon}}

| ...

| 2016 (approved)<ref name=ISRO>{{cite news|last =Beary |first =Habib |coauthors = |title =India announces first manned space mission |work =|pages =1|publisher =BBC|date =2010-01-27|url =http://news.bbc.co.uk/2/hi/south_asia/8483787.stm| accessdate =}}</ref>

| [[ISRO Orbital Vehicle|Orbital Vehicle (OV)]]

| [[Geosynchronous Satellite Launch Vehicle|GSLV Mk II]]

|-

| {{Flag|Iran}}

| [[Iranian Space Agency|Iranian Space Agency (ISA)]]

| فضانورد {{Fa icon}}<br /> ''faza navard''

| ...

| 2017 (planned)<ref>[http://www.presstv.ir/detail.aspx?id=137553&sectionid=3510212 PressTV: 'Iran to put astronaut in space in 2017']</ref><ref>http://www.bbc.co.uk/news/world-middle-east-10747390</ref>

| [[Iranian Space Agency#Manned space program|ISA manned spacecraft]]

| ...

|-

| {{Flagicon|European Union}} [[ESA]]

| [[European Space Agency|European Space Agency (ESA)]]

| astronaut

| ...

| 2020 (approved conceptually but full development not begun)<ref>{{cite news| url=http://news.bbc.co.uk/2/hi/science/nature/8139347.stm|work=BBC News|title=Europe targets manned spaceship|date=July 7, 2009|accessdate=March 27, 2010}}</ref><ref>[http://www.flightglobal.com/articles/2008/05/22/223941/apollo-like-capsule-chosen-for-crew-space-transportation.html Apollo-like capsule chosen for Crew Space Transportation System], 22 May 2008</ref><ref>[http://esamultimedia.esa.int/docs/ATV/infokit/english/Complete_Infokit_ATVreentry.pdf ‘Jules Verne’ Automated Transfer Vehicle (ATV) Re-entry]</ref><ref>{{cite news| url=http://news.bbc.co.uk/1/hi/sci/tech/7749761.stm|work=BBC News|title=Europe's 10bn-euro space vision|date=November 26, 2008|accessdate=March 27, 2010}}</ref>

| [[Automated Transfer Vehicle|ARV phase-2]] (may be changed to [[CSTS]])

| [[Ariane V]]

|-

| {{Flag|Japan}}

| [[Japan Aerospace Exploration Agency|Japan Aerospace Exploration Agency (JAXA)]]

| 宇宙飛行士 {{ja icon}}<br />''uchūhikōshi''

| ...

| 2025 (planned){{Citation needed|date=July 2010}}

| [[H-II Transfer Vehicle|HTV-based spacecraft]]

| [[H-IIB]]

|-

| ''{{Flag|Romania}}''

| ''[[ARCASPACE|Romanian Cosmonautics and Aeronautics Association (ARCASPACE)]]''

| astronaut<br />''astronaut'' {{ro icon}}

| ''...''

| ''TBA (approved)''{{Citation needed|date=July 2010}}

| ''[[ARCASPACE#Stabilo|Stabilo-mission8]]''

| ''[[Balloon (aircraft)|ARCASPACE air-balloon]]''

|}


<!--

Please, DO NOT DELETE Romania. Its light airballoon-launched manned capsule fully developes in country and Romanian pilot will counts as astronaut because a highest point of suborbital flight of capsule will exceed the space boundary of 100 km. (But it needs to be sourced to remain in Wkipedia. Tag added 2010-07-24 to allow a bit of time to pass for interested editors to remedy this.)


And please, NOT INCLUDE Equador. Its manned space program http://exa.ec/ESAA-PECE_files/frame.htm with first suborbital mission ESAA-01 is not based on indigenous technology. It will be one of the first payed client's missions aboard on foreign airplane-launched spacecraft [[Space Adventures Explorer|M55X+Explorer system]] that now is under development by Russian NPOM-Almaz company (former Myasishchev Bureau) according to order of British-US commercial space touristic company [[Space Adventures]].

-->


==Safety concerns==

{{Expand section|date=April 2007}}

{{See also| Space habitat| Human adaptation to space}}


Planners of human spaceflight missions face a number of safety concerns.


===Life support===

{{Main| Life support system}}

The immediate needs for breathable air and drinkable water are addressed by the [[life support system]] of the spacecraft.


{{See also|Astronautical hygiene}}


===Medical issues===

====Effects of microgravity====

{{See also| Weightlessness}}

Medical data from astronauts in low earth orbits for long periods, dating back to the 1970s, show several adverse effects of a microgravity environment: loss of [[bone]] density, decreased muscle strength and endurance, postural instability, and reductions in aerobic capacity. Over time these [[deconditioning]] effects can impair astronauts’ performance or increase their risk of injury.<ref>

{{cite web|url = http://exploration.grc.nasa.gov/Exploration/Advanced/Human/Exercise/|title = Exploration Systems Human Research Program - Exercise Countermeasures|publisher = NASA}}</ref>


In a weightless environment, astronauts put almost no weight on the back [[muscle]]s or leg muscles used for standing up. Those muscles then start to weaken and eventually get smaller. If there is an emergency at landing, the loss of muscles, and consequently the loss of strength can be a serious problem. Sometimes, astronauts can lose up to 25% of their muscle mass on long term flights. When they get back to ground, they will be considerably weakened and will be out of action for a while.{{Citation needed|date=July 2010}}


Astronauts experiencing weightlessness will often lose their orientation, get [[motion sickness]], and lose their sense of direction as their bodies try to get used to a weightless environment. When they get back to Earth, or any other mass with gravity, they have to readjust to the gravity and may have problems standing up, focusing their gaze, walking and turning. Importantly, those body motor disturbances after changing from different gravities only get worse the longer the exposure to little gravity.{{Citation needed|date=July 2010}} These changes will affect operational activities including approach and landing, docking, remote manipulation, and emergencies that may happen while landing. This can be a major roadblock to mission success.{{Citation needed|date=July 2010}}


====Radiation====

Without proper shielding the crews of missions beyond low Earth orbit (LEO) might be at risk from high-energy protons emitted by [[solar flare]]s. [[Lawrence Townsend]] of the University of Tennessee and others have studied the most powerful solar flare ever recorded. That flare was seen by the British astronomer [[Richard Carrington]] in September 1859. Radiation doses astronauts would receive from a Carrington-type flare could cause acute radiation sickness and possibly even death.<ref>{{cite web |url=http://www.newscientist.com/article/dn7142 |title= Superflares could kill unprotected astronauts |date=21 March 2005 |author=Stephen Battersby}}</ref>


Another type of radiation, [[galactic cosmic ray]]s, present further challenges to human spaceflight beyond LEO.<ref>{{cite web |url=http://www.nap.edu/catalog.php?record_id=11760 |title=

Space Radiation Hazards and the Vision for Space Exploration |publisher=NAP |year=2006}}</ref>


=====Radiation damage to the immune system=====

{{See also|Health threat from cosmic rays}}

There is also some scientific concern that extended space flight might slow down the body’s ability to protect itself against diseases.<ref>{{Cite web|url=http://www.jleukbio.org/cgi/content/abstract/86/5/1027|title=Could spaceflight-associated immune system weakening preclude the expansion of human presence beyond Earth’s orbit}}</ref> Some of the problems are a weakened [[immune system]] and the activation of dormant [[virus]]es in the body. [[Radiation]] can cause both short and long term consequences to the bone marrow stem cells which create the blood and immune systems. Because the interior of a spacecraft is so small, a weakened immune system and more active viruses in the body can lead to a fast spread of infection.{{Citation needed|date=July 2010}}


====Isolation====


During long missions, astronauts are [[Isolation (psychology)|isolated]] and confined into small spaces. [[depression (mood)|Depression]], [[cabin fever]] and other psychological problems may result that impact crew safety and mission success.{{Citation needed|date=March 2009}}


Astronauts may not be able to quickly return to Earth or receive medical supplies, equipment or personnel if a medical emergency occurs. The astronauts may have to rely for long periods on their limited existing resources and medical advice from the ground.


===Launch safety===

{{See also| Space launch| Pad abort test}}


===Reentry safety===

{{See also| Atmospheric reentry}}


===Reliability===

{{See also| Reliability engineering}}


===Fatality risk===


{{See also|Space accidents and incidents#Spaceflight fatalities}}


{{As of|2009}}, 18 crew members have died during actual spaceflight missions (see table). Over 100 others have died in accidents during activity directly related to spaceflight missions or testing.


{|class="wikitable" border="1"

|-


!Year


!#of


Deaths


!Mission


!Known or likely cause

|-

| 1967

|style="text-align: center;"| 1

| [[Soyuz 1]]

|

|-

| 1971

|style="text-align: center;"| 3

| [[Soyuz 11]]

| [[Asphyxia]]

|-

| 1986

|style="text-align: center;"| 7

| [[Space Shuttle Challenger disaster|Space Shuttle Challenger]]

| <!-- need a citation for this claim; others have said deaths of some may have been caused from explosive forces or heat from the atmospheric explosion -->


(mission never reached space)

|-

| 2003

|style="text-align: center;"| 7

| [[Space Shuttle Columbia disaster|Space Shuttle Columbia]]

| [[Asphyxia]] from cabin breach, [[Physical trauma|trauma]] from object impact, or [[burns]] from re-entry heat{{Citation needed|date=February 2010}}<!-- need a citation for this claim; other sources have indicated some (all?) deaths may have been caused from excessive g-forces or heat from rapid deceleration once the integrity of the cabin was breached, ostensibly, prior to the time asphyxiation could have occurred. -->

|}


==See also==

{{Portal box|Spaceflight}}

<div style="-moz-column-count:2; column-count:2;">

*[[Astronaut]]

*[[Astronautical hygiene]]

*[[Atmospheric reentry]]

*[[Human adaptation to space]]

*[[Interplanetary travel]]

*[[Mars to Stay]]

*[[Monkeys in space]]

*[[Space and survival]]

*[[Space colonization]]

*[[Space exploration]]

*[[Spacecraft]]

*[[Space tourism]]

*[[Spaceflight records]]

*[[Spaceport]]

*[[Space Suit]]

*[[SpaceShipOne]]

*[[Timeline of Solar System exploration]]

*[[Timeline of space travel by nationality]]

*[[Timeline of first orbital launches by country]]

*[[X-15|X-15 program]]

</div>


; Lists

*[[List of astronauts by name]]

*[[List of human spaceflights]]

*[[List of human spaceflight programs]]

*[[List of manned spacecraft]]

*[[List of space agencies]]

*[[List of space disasters]]

*[[List of spacewalks]]


==References==

{{Reflist|2}}

{{Refimprove|date=October 2007}}


==External links==

*[http://spaceflight.nasa.gov/ NASA Human Space Flight]

*[http://www.nasa.gov/constellation Official Constellation NASA Web Site]

*[http://www.nasa.gov/orion Official Orion NASA Web Site]

*[http://www.nasa.gov/ares Official Ares NASA Web Site]

*[http://solarsystem.nasa.gov/missions/profile.cfm?MCode=Human_Spaceflight Human Spaceflight Profile] by [http://solarsystem.nasa.gov NASA's Solar System Exploration]

*[http://www.nasaconstellation.com Transitioning to the NASA Constellation Program]

*[http://www.spaceflighthistory.com U.S. Spaceflight History]


{{Public sector space agencies}}

{{Spaceflight}}

{{Space exploration lists and timelines}}


{{DEFAULTSORT:Human Spaceflight}}

<!--Categories-->

[[Category:Human spaceflight| ]]

[[Category:Space policy]]


<!--Other languages-->

[[ca:Viatge espacial tripulat]]

[[da:Bemandet rummission]]

[[de:Bemannte Raumfahrt]]

[[es:Vuelo espacial tripulado]]

[[fr:Vol spatial habité]]

[[id:Misi luar angkasa berawak]]

[[he:אדם בחלל]]

[[hu:Űrrepülés]]

[[mk:Човечки вселенски летови]]

[[nl:Bemande ruimtevaart]]

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[[pl:Załogowy lot kosmiczny]]

[[ru:Пилотируемый космический полёт]]

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[[ta:மனித விண்வெளிப்பறப்பு]]

[[th:การบินอวกาศ]]

[[tr:İnsanlı uzay uçuş programı]]

[[yo:Ìfòlókè òfurufú ènìyàn]]

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'[[Image:Astronaut Edward White first American spacewalk Gemini 4.jpg|thumb|300px|[[Edward Higgins White|Edward White]] on a [[spacewalk]] during the [[Gemini 4]] mission]] '''Human spaceflight''' is [[spaceflight]] with a [[Astronaut|human crew]] and possibly passengers. This makes it unlike [[Robotic spacecraft|robotic]] [[space probe]]s or remotely-controlled [[satellite]]s. Human spaceflight is sometimes called '''[[Human resources|manned]] spaceflight''', a term now deprecated by major space agencies in favor of its [[Gender-neutral language in English|gender-neutral]] alternative. The first human spaceflight was accomplished on [[Cosmonautics Day|April 12, 1961]] by [[Soviet]] cosmonaut [[Yuri Gagarin]]. The only countries to have independent human spaceflight capability are [[Russia]], [[United States]] and [[People's Republic of China|China]]. As of 2010, human spaceflights are being actively launched by the [[Soyuz programme]] conducted by the [[Russian Federal Space Agency]], the [[Space Shuttle program]] conducted by [[NASA]], and the [[Shenzhou program]] conducted by the [[China National Space Administration]]. The US will lose governmental human spaceflight launch capability upon retirement of the [[Space Shuttle]], expected in 2011. Under the Bush administration, the [[Constellation program]] included plans for canceling the Shuttle and replacing it with the capability for spaceflight beyond low Earth orbit. In the [[2011 United States federal budget]], the Obama administration proposed canceling Constellation. Under the new plan, NASA would rely on transportation services provided by the private sector, such as [[Space X]]'s [[Falcon 9]]. The period between the retirement of the Shuttle and the initial operational capability of new systems (either Constellation or the new commercial proposals), similar to the gap between the cancellation of [[Apollo program|Apollo]] and the [[STS-1|first Space Shuttle flight]], is often referred to as the human spaceflight gap. In recent years there has been a gradual movement towards more commercial forms of spaceflight. A number of non-governmental [[startup companies]] have sprung up in recent years, hoping to create a [[space tourism]] industry. For a list of such companies, and the spacecraft they are currently building, see [[List of private spaceflight companies]]. 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 early February 2010,<ref>{{Cite web|url=http://www.nasa.gov/news/budget/index.html|title=FY 2011 Budget}}</ref> the Obama administration is moving 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 intends to spend $6 billion in the coming years to develop commercial crew vehicles, using a model similar to that used under COTS.<ref>{{Cite web|url=http://www.nasa.gov/pdf/428356main_Exploration.pdf|title=Mission Directorate: Exploration Systems|format=PDF}}</ref> ==History== {{Main|History of spaceflight}} ===First human spaceflights=== [[File:Yuri Gagarin 140-190 for collage (new).jpg|thumb|upright|left|[[Yuri Gagarin]], the first man in space, in his [[space suit]] during the [[Vostok 1]] mission]] The first human spaceflight took place on April 12, 1961, when [[cosmonaut]] [[Yuri Gagarin]] made one orbit around the Earth aboard the [[Vostok 1]] spacecraft, launched by the [[Soviet space program]] and designed by the rocket scientist [[Sergey Korolyov]]. [[Valentina Tereshkova]] became the first woman in space on board [[Vostok 6]] on June 16, 1963. Both spacecraft were launched by [[Vostok 3KA]] launch vehicles. [[Alexei Leonov]] made the first [[spacewalk]] when he left the [[Voskhod 2]] on March 8, 1965. [[Svetlana Savitskaya]] became the first woman to do so on July 25, 1984. [[File:Aldrin Apollo 11.jpg|thumb|[[Buzz Aldrin]] on the surface of the [[Moon]] during [[Apollo 11]]]] The [[United States]] became the second nation to achieve manned spaceflight, with the suborbital flight of [[astronaut]] [[Alan Shepard]] aboard ''[[Freedom 7]]'', carried out as part of [[Project Mercury]]. The spacecraft was launched on May 5, 1961 on a [[Mercury-Redstone Launch Vehicle|Redstone rocket]]. The first U.S. orbital flight was that of [[John Glenn]] aboard ''[[Friendship 7]]'', which was launched February 20, 1962 on an [[SM-65D Atlas|Atlas]] rocket. Since 1981 the U.S. has conducted all its human spaceflight missions with reusable [[Space Shuttle]]s. [[Sally Ride]] became the first American woman in space in 1983. [[Eileen Collins]] was the first female Shuttle pilot, and with Shuttle mission [[STS-93]] in July 1999 she became the first woman to command a U.S. spacecraft. The [[People's Republic of China]] became the third nation to achieve human spaceflight when [[Yang Liwei]] launched into space on a Chinese-made vehicle, the [[Shenzhou 5]], on October 15, 2003. The flight made China the third nation to have launched its own manned spacecraft using its own launcher. Previous European ([[Hermes (shuttle)|Hermes]]) and Japanese ([[HOPE-X]]) domestic manned programs were abandoned after years of development, as was the first Chinese attempt, the [[Shuguang spacecraft]]. The farthest destination for a human spaceflight mission has been the [[Moon]]. The only missions to the Moon have been those conducted by [[NASA]] as part of the [[Apollo program]]. The first such mission, [[Apollo 8]], orbited the Moon but did not land. The first Moon landing mission was [[Apollo 11]], during which—on July 20, 1969—[[Neil Armstrong]] and [[Buzz Aldrin]] became the first people to set foot on the Moon. Six missions landed in total, numbered Apollo 11–[[Apollo 17|17]], excluding [[Apollo 13]]. Altogether twelve men walked on the Moon, the only humans to have been on an extraterrestrial body. The Soviet Union discontinued its program for lunar orbiting and landing of human spaceflight missions on June 24, 1974 when [[Valentin Glushko]] became General Designer of [[NPO Energiya]].<ref> {{cite book|title = Challenge To Apollo The Soviet Union and The Space Race, 1945-1974|last = Siddiqi|first = Asif|pages = 832|publisher = NASA|url = http://ntrs.nasa.gov/search.jsp?Ntk=all&Ntx=mode%20matchall&Ntt=SP-2000-4408}}</ref> The longest single human spaceflight is that of [[Valeriy Polyakov]], who left earth on January 8, 1994, and didn't return until March 22, 1995 (a total of 437 days 17 hr. 58 min. 16 sec. aboard). [[Sergei Krikalyov]] has spent the most time of anyone in space, 803 days, 9 hours, and 39 seconds altogether. The longest period of continuous human presence in space lasted as long as 3,644 days, eight days short of 10 years, spanning the launch of [[Soyuz TM-8]] on September 5, 1989 to the landing of [[Soyuz TM-29]] on August 28, 1999. For many years beginning in 1961, only two countries, the USSR (later [[Russia]]) and United States, had their own astronauts. Citizens of other nations flew in space, beginning with the flight of [[Vladimir Remek]], a [[Czech Republic|Czech]], on a Soviet spacecraft on March 2, 1978. {{As of|2010}}, citizens from 38 nations (including [[space tourism|space tourists]]) have flown in space aboard Soviet, American, Russian, and Chinese spacecraft. ==Space programs== As of 2010, human spaceflight missions have been conducted by the former [[Soviet Union]]/([[Russia]]), the [[United States]], the [[People's Republic of China]] and by the [[private spaceflight]] company [[Scaled Composites]].<!-- chronological order --> Several other countries and space agencies have announced and begun human spaceflight programs by their own technology, including [[India]] ([[ISRO]]), [[Ecuador]] ([[Ecuadorian Civilian Space Agency|EXA]]), [[Japan]] ([[JAXA]]), [[Iran]] ([[Iranian Space Agency|ISA]]) and [[Malaysia]] ([[Malaysian National Space Agency|MNSA]]). [[File:Human spaceflight.svg|thumb|400px|right|Countries which have human spaceflight agendas.]] Currently the following [[spacecraft]] and [[spaceport]]s are used for launching human spaceflights: *[[Soyuz spacecraft|Soyuz]] with [[Soyuz (rocket family)|Soyuz rocket]]—[[Baikonur Cosmodrome]] *[[Space Shuttle]]—[[Kennedy Space Center]] *[[International Space Station]] (ISS)—Assembled in orbit; crews transported by the previous two spacecraft<!--The launch history of ISS components -- which on Shuttle; which on Proton -- should be adequately covered in the ISS articles. --> *[[Shenzhou spacecraft]] with [[Long March rocket]]—[[Jiuquan Satellite Launch Center]] Historically, the following spacecraft and [[spaceport]]s have also been used for human spaceflight launches: *[[Vostok spacecraft|Vostok]]—Baikonur Cosmodrome *[[Project Mercury|Mercury]]—[[Cape Canaveral Air Force Station]] *[[Voskhod spacecraft|Voskhod]]—Baikonur Cosmodrome *[[X-15]]—[[Edwards Air Force Base]],<ref> {{cite web|url = http://www.nasa.gov/centers/dryden/news/FactSheets/FS-052-DFRC.html|title = X-15 Hypersonic Research Program|publisher = NASA}}</ref> (two internationally recognized suborbital flights in program) *[[Project Gemini|Gemini]]—Cape Canaveral Air Force Station *[[Apollo spacecraft|Apollo]]—Kennedy Space Center (Apollo 7 at Cape Canaveral Air Force Station) *[[Salyut]] space station—Baikonur Cosmodrome *[[Almaz]] space station—Baikonur Cosmodrome (Almaz was a series of military space stations under cover of the civilian name Salyut) *[[Skylab]] space station—Kennedy Space Center *[[Mir]] space station—Baikonur Cosmodrome *[[SpaceShipOne]] with [[Scaled Composites White Knight|White Knight]]—[[Mojave Spaceport]] Numerous private companies attempted human spaceflight programs in an effort to win the $10 million [[Ansari X Prize]]. The first private human spaceflight took place on June 21, 2004, when [[SpaceShipOne]] conducted a suborbital flight. SpaceShipOne captured the prize on October 4, 2004, when it accomplished two consecutive flights within one week. [[SpaceShipTwo]], launching from the carrier aircraft [[Scaled Composites WhiteKnightTwo|White Knight Two]], is planned to conduct regular suborbital space tourism. Most of the time, the only humans in space are those aboard the ISS, whose crew of six spends up to six months at a time in [[low Earth orbit]]. [[NASA]] and [[ESA]] now use the term "human spaceflight" to refer to their programs of launching people into space. Traditionally, these endeavors have been referred to as "manned space missions." {{Human Spaceflight Timeline}} ==National spacefaring attempts== {{Notice|This section list all nations which have developed the technologies to travel into space. This should not to be confused with [[List of space travelers by nationality|nations with citizens who have traveled into space]] including space tourists, flown or intended to fly by foreign country's or non-domestic private space systems – these do NOT count as national spacefaring attempts.}} : Successfully executed manned programs are in '''bold'''. : [[Sub-orbital spaceflight|Suborbital]] spaceflights are in ''italics''. {| class="wikitable"| border=2 cellpadding="4" cellspacing="0" style="margin: 1em 1em 1em 0; border: 1px #aaa solid; border-collapse: collapse; font-size: 95 %;" |- bgcolor="#f9f9b0" ! Nation/Organization ! Space agency ! National term ! First launched astronaut ! Date ! Spacecraft ! Launcher |- | '''{{Flag|Soviet Union}}''' | '''[[Soviet space program]]<br />([[OKB-1|OKB-1 Design Bureau]])''' | '''космонавт&nbsp;{{ru icon}}<br />''kosmonavt'' | '''[[Yuri Gagarin]]''' | '''April 12, 1961''' | '''[[Vostok spacecraft]]''' | '''[[Vostok rocket|Vostok]]''' |- | '''''{{Flag|United States}}''''' | '''''[[NASA|National Aeronautics and Space Administration (NASA)]]''''' | '''''astronaut''''' | '''''[[Alan Shepard]]''''' | '''''May 5, 1961''''' | '''''[[Mercury spacecraft#Spacecraft|Mercury spacecraft]]''''' | '''''[[Mercury-Redstone Launch Vehicle|Redstone]]''''' |- | {{Flag|China}} | [[China space program]] | 宇航员 {{zh icon}}<br />''yǔhángyuán''<br />航天员 {{zh icon}}<br />''hángtiānyuán'' | ... | 1973 (abandoned) | [[Shuguang spacecraft|Shuguang 1]] | [[Long March 2A]] |- | {{Flag|China}} | [[China space program]] | 宇航员 {{zh icon}}<br />''yǔhángyuán''<br />航天员 {{zh icon}}<br />''hángtiānyuán'' | ... | 1981 (abandoned) | [[Fanhui Shi Weixing|Piloted FSW]] | [[Long March 2]] |- | {{Flagicon|European Union}} [[ESA]] | [[CNES]] / [[European Space Agency|European Space Agency (ESA)]] | ''spationaute'' {{Fr icon}}<br />astronaut | ... | 1992 (abandoned) | [[Hermes (shuttle)|Hermes]] | [[Ariane V]] |- | {{Flag|Iraq|1991}}<ref>According to a press-release of Iraqi News Agency of December 5, 1989 about the first (and last) test of the [[Tammouz rocket|Tammouz]] space launcher, [[Iraq]] intended to develop manned space facilities by the end of the century. These plans were put to an end by the [[Gulf War]] of 1991 and the economic hard times that followed.</ref> | ... | رجل فضاء {{ar icon}}<br />''rajul faḍāʼ''<br />رائد فضاء {{ar icon}}<br />''rāʼib faḍāʼ''<br />ملاح فضائي {{ar icon}}<br />''mallāḥ faḍāʼiy'' | ... | 2001 (abandoned) | ... | [[Tammouz rocket|Tammouz 2 or 3]] |- | {{Flag|Japan}} | [[National Space Development Agency of Japan|National Space Development Agency of Japan (NASDA)]] | 宇宙飛行士 {{ja icon}}<br />''uchūhikōshi'' | ... | 2003 (abandoned) | [[HOPE-X]] | [[H-II]] |- | {{Flag|China}} | '''[[China National Space Administration|China National Space Administration (CNSA)]]''' | '''太空人 {{zh icon}}<br />''tàikōng rén''<br />宇航员 {{zh icon}}<br />''yǔhángyuán''<br />航天员 {{zh icon}}<br />''hángtiānyuán''''' | '''[[Yang Liwei]]''' | '''October 15, 2003''' | '''[[Shenzhou (spacecraft)|Shenzhou spacecraft]]''' | '''[[Long March 2F]]''' |- | {{Flag|India}} | [[Indian Space Research Organisation|Indian Space Research Organisation (ISRO)]] | vyomanaut<br /> gaganaut<br />''aakashagaami''<br />आकाशगामि: &nbsp;{{Sa icon}}<br />''brahmāndagaami''<br /> ब्रह्मान्डगामि: &nbsp;{{Sa icon}}<br />''antarikshyaatri''<br />अन्तरिक्षयात्रि:&nbsp;{{Sa icon}} | ... | 2016 (approved)<ref name=ISRO>{{cite news|last =Beary |first =Habib |coauthors = |title =India announces first manned space mission |work =|pages =1|publisher =BBC|date =2010-01-27|url =http://news.bbc.co.uk/2/hi/south_asia/8483787.stm| accessdate =}}</ref> | [[ISRO Orbital Vehicle|Orbital Vehicle (OV)]] | [[Geosynchronous Satellite Launch Vehicle|GSLV Mk II]] |- | {{Flag|Iran}} | [[Iranian Space Agency|Iranian Space Agency (ISA)]] | فضانورد {{Fa icon}}<br /> ''faza navard'' | ... | 2017 (planned)<ref>[http://www.presstv.ir/detail.aspx?id=137553&sectionid=3510212 PressTV: 'Iran to put astronaut in space in 2017']</ref><ref>http://www.bbc.co.uk/news/world-middle-east-10747390</ref> | [[Iranian Space Agency#Manned space program|ISA manned spacecraft]] | ... |- | {{Flagicon|European Union}} [[ESA]] | [[European Space Agency|European Space Agency (ESA)]] | astronaut | ... | 2020 (approved conceptually but full development not begun)<ref>{{cite news| url=http://news.bbc.co.uk/2/hi/science/nature/8139347.stm|work=BBC News|title=Europe targets manned spaceship|date=July 7, 2009|accessdate=March 27, 2010}}</ref><ref>[http://www.flightglobal.com/articles/2008/05/22/223941/apollo-like-capsule-chosen-for-crew-space-transportation.html Apollo-like capsule chosen for Crew Space Transportation System], 22 May 2008</ref><ref>[http://esamultimedia.esa.int/docs/ATV/infokit/english/Complete_Infokit_ATVreentry.pdf ‘Jules Verne’ Automated Transfer Vehicle (ATV) Re-entry]</ref><ref>{{cite news| url=http://news.bbc.co.uk/1/hi/sci/tech/7749761.stm|work=BBC News|title=Europe's 10bn-euro space vision|date=November 26, 2008|accessdate=March 27, 2010}}</ref> | [[Automated Transfer Vehicle|ARV phase-2]] (may be changed to [[CSTS]]) | [[Ariane V]] |- | {{Flag|Japan}} | [[Japan Aerospace Exploration Agency|Japan Aerospace Exploration Agency (JAXA)]] | 宇宙飛行士 {{ja icon}}<br />''uchūhikōshi'' | ... | 2025 (planned){{Citation needed|date=July 2010}} | [[H-II Transfer Vehicle|HTV-based spacecraft]] | [[H-IIB]] |- | ''{{Flag|Romania}}'' | ''[[ARCASPACE|Romanian Cosmonautics and Aeronautics Association (ARCASPACE)]]'' | astronaut<br />''astronaut'' {{ro icon}} | ''...'' | ''TBA (approved)''{{Citation needed|date=July 2010}} | ''[[ARCASPACE#Stabilo|Stabilo-mission8]]'' | ''[[Balloon (aircraft)|ARCASPACE air-balloon]]'' |} <!-- Please, DO NOT DELETE Romania. Its light airballoon-launched manned capsule fully developes in country and Romanian pilot will counts as astronaut because a highest point of suborbital flight of capsule will exceed the space boundary of 100 km. (But it needs to be sourced to remain in Wkipedia. Tag added 2010-07-24 to allow a bit of time to pass for interested editors to remedy this.) And please, NOT INCLUDE Equador. Its manned space program http://exa.ec/ESAA-PECE_files/frame.htm with first suborbital mission ESAA-01 is not based on indigenous technology. It will be one of the first payed client's missions aboard on foreign airplane-launched spacecraft [[Space Adventures Explorer|M55X+Explorer system]] that now is under development by Russian NPOM-Almaz company (former Myasishchev Bureau) according to order of British-US commercial space touristic company [[Space Adventures]]. --> ==Safety concerns== {{Expand section|date=April 2007}} {{See also| Space habitat| Human adaptation to space}} Planners of human spaceflight missions face a number of safety concerns. ===Life support=== {{Main| Life support system}} The immediate needs for breathable air and drinkable water are addressed by the [[life support system]] of the spacecraft. {{See also|Astronautical hygiene}} ===Medical issues=== ====Effects of microgravity==== {{See also| Weightlessness}} Medical data from astronauts in low earth orbits for long periods, dating back to the 1970s, show several adverse effects of a microgravity environment: loss of [[bone]] density, decreased muscle strength and endurance, postural instability, and reductions in aerobic capacity. Over time these [[deconditioning]] effects can impair astronauts’ performance or increase their risk of injury.<ref> {{cite web|url = http://exploration.grc.nasa.gov/Exploration/Advanced/Human/Exercise/|title = Exploration Systems Human Research Program - Exercise Countermeasures|publisher = NASA}}</ref> In a weightless environment, astronauts put almost no weight on the back [[muscle]]s or leg muscles used for standing up. Those muscles then start to weaken and eventually get smaller. If there is an emergency at landing, the loss of muscles, and consequently the loss of strength can be a serious problem. Sometimes, astronauts can lose up to 25% of their muscle mass on long term flights. When they get back to ground, they will be considerably weakened and will be out of action for a while.{{Citation needed|date=July 2010}} Astronauts experiencing weightlessness will often lose their orientation, get [[motion sickness]], and lose their sense of direction as their bodies try to get used to a weightless environment. When they get back to Earth, or any other mass with gravity, they have to readjust to the gravity and may have problems standing up, focusing their gaze, walking and turning. Importantly, those body motor disturbances after changing from different gravities only get worse the longer the exposure to little gravity.{{Citation needed|date=July 2010}} These changes will affect operational activities including approach and landing, docking, remote manipulation, and emergencies that may happen while landing. This can be a major roadblock to mission success.{{Citation needed|date=July 2010}} ====Radiation==== Without proper shielding the crews of missions beyond low Earth orbit (LEO) might be at risk from high-energy protons emitted by [[solar flare]]s. [[Lawrence Townsend]] of the University of Tennessee and others have studied the most powerful solar flare ever recorded. That flare was seen by the British astronomer [[Richard Carrington]] in September 1859. Radiation doses astronauts would receive from a Carrington-type flare could cause acute radiation sickness and possibly even death.<ref>{{cite web |url=http://www.newscientist.com/article/dn7142 |title= Superflares could kill unprotected astronauts |date=21 March 2005 |author=Stephen Battersby}}</ref> Another type of radiation, [[galactic cosmic ray]]s, present further challenges to human spaceflight beyond LEO.<ref>{{cite web |url=http://www.nap.edu/catalog.php?record_id=11760 |title= Space Radiation Hazards and the Vision for Space Exploration |publisher=NAP |year=2006}}</ref> =====Radiation damage to the immune system===== {{See also|Health threat from cosmic rays}} There is also some scientific concern that extended space flight might slow down the body’s ability to protect itself against diseases.<ref>{{Cite web|url=http://www.jleukbio.org/cgi/content/abstract/86/5/1027|title=Could spaceflight-associated immune system weakening preclude the expansion of human presence beyond Earth’s orbit}}</ref> Some of the problems are a weakened [[immune system]] and the activation of dormant [[virus]]es in the body. [[Radiation]] can cause both short and long term consequences to the bone marrow stem cells which create the blood and immune systems. Because the interior of a spacecraft is so small, a weakened immune system and more active viruses in the body can lead to a fast spread of infection.{{Citation needed|date=July 2010}} ====Isolation==== During long missions, astronauts are [[Isolation (psychology)|isolated]] and confined into small spaces. [[depression (mood)|Depression]], [[cabin fever]] and other psychological problems may result that impact crew safety and mission success.{{Citation needed|date=March 2009}} Astronauts may not be able to quickly return to Earth or receive medical supplies, equipment or personnel if a medical emergency occurs. The astronauts may have to rely for long periods on their limited existing resources and medical advice from the ground. ===Launch safety=== {{See also| Space launch| Pad abort test}} ===Reentry safety=== {{See also| Atmospheric reentry}} ===Reliability=== {{See also| Reliability engineering}} ===Fatality risk=== {{See also|Space accidents and incidents#Spaceflight fatalities}} {{As of|2009}}, 18 crew members have died during actual spaceflight missions (see table). Over 100 others have died in accidents during activity directly related to spaceflight missions or testing. {|class="wikitable" border="1" |- !Year !#of Deaths !Mission !Known or likely cause |- | 1967 |style="text-align: center;"| 1 | [[Soyuz 1]] | |- | 1971 |style="text-align: center;"| 3 | [[Soyuz 11]] | [[Asphyxia]] |- | 1986 |style="text-align: center;"| 7 | [[Space Shuttle Challenger disaster|Space Shuttle Challenger]] | <!-- need a citation for this claim; others have said deaths of some may have been caused from explosive forces or heat from the atmospheric explosion --> (mission never reached space) |- | 2003 |style="text-align: center;"| 7 | [[Space Shuttle Columbia disaster|Space Shuttle Columbia]] | [[Asphyxia]] from cabin breach, [[Physical trauma|trauma]] from object impact, or [[burns]] from re-entry heat{{Citation needed|date=February 2010}}<!-- need a citation for this claim; other sources have indicated some (all?) deaths may have been caused from excessive g-forces or heat from rapid deceleration once the integrity of the cabin was breached, ostensibly, prior to the time asphyxiation could have occurred. --> |} ==See also== {{Portal box|Spaceflight}} <div style="-moz-column-count:2; column-count:2;"> *[[Astronaut]] *[[Astronautical hygiene]] *[[Atmospheric reentry]] *[[Human adaptation to space]] *[[Interplanetary travel]] *[[Mars to Stay]] *[[Monkeys in space]] *[[Space and survival]] *[[Space colonization]] *[[Space exploration]] *[[Spacecraft]] *[[Space tourism]] *[[Spaceflight records]] *[[Spaceport]] *[[Space Suit]] *[[SpaceShipOne]] *[[Timeline of Solar System exploration]] *[[Timeline of space travel by nationality]] *[[Timeline of first orbital launches by country]] *[[X-15|X-15 program]] </div> ; Lists *[[List of astronauts by name]] *[[List of human spaceflights]] *[[List of human spaceflight programs]] *[[List of manned spacecraft]] *[[List of space agencies]] *[[List of space disasters]] *[[List of spacewalks]] ==References== {{Reflist|2}} {{Refimprove|date=October 2007}} ==External links== *[http://spaceflight.nasa.gov/ NASA Human Space Flight] *[http://www.nasa.gov/constellation Official Constellation NASA Web Site] *[http://www.nasa.gov/orion Official Orion NASA Web Site] *[http://www.nasa.gov/ares Official Ares NASA Web Site] *[http://solarsystem.nasa.gov/missions/profile.cfm?MCode=Human_Spaceflight Human Spaceflight Profile] by [http://solarsystem.nasa.gov NASA's Solar System Exploration] *[http://www.nasaconstellation.com Transitioning to the NASA Constellation Program] *[http://www.spaceflighthistory.com U.S. Spaceflight History] {{Public sector space agencies}} {{Spaceflight}} {{Space exploration lists and timelines}} {{DEFAULTSORT:Human Spaceflight}} <!--Categories--> [[Category:Human spaceflight| ]] [[Category:Space policy]] <!--Other languages--> [[ca:Viatge espacial tripulat]] [[da:Bemandet rummission]] [[de:Bemannte Raumfahrt]] [[es:Vuelo espacial tripulado]] [[fr:Vol spatial habité]] [[id:Misi luar angkasa berawak]] [[he:אדם בחלל]] [[hu:Űrrepülés]] [[mk:Човечки вселенски летови]] [[nl:Bemande ruimtevaart]] [[ja:有人宇宙飛行]] [[pl:Załogowy lot kosmiczny]] [[ru:Пилотируемый космический полёт]] [[fi:Miehitetyt avaruuslennot]] [[ta:மனித விண்வெளிப்பறப்பு]] [[th:การบินอวกาศ]] [[tr:İnsanlı uzay uçuş programı]] [[yo:Ìfòlókè òfurufú ènìyàn]] [[zh:载人航天]]'
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'REC IS AWESOME!!!!!! HE WAS THE FIRST AND ONLY PERSON WHO WALKED ON EVERY PLANET AND STAR IN THE GALAXIE!'
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0
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1296506913

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