129 relations: Airlock, Alan Bean, Alan Shepard, Aleksei Yeliseyev, Alexey Leonov, Alfred Worden, Anatoly Solovyev, Andy Thomas, Apollo (spacecraft), Apollo 11, Apollo 15, Apollo 16, Apollo 17, Apollo Lunar Module, Apollo program, Astronaut, Astronaut propulsion unit, Avionics, Bernard A. Harris Jr., Bruce McCandless II, Buzz Aldrin, CBS, Charles Duke, Christer Fuglesang, Christopher Cassidy, Cold War, Communist Party of the Soviet Union, Coordinated Universal Time, David Scott, Decompression sickness, Ed White (astronaut), Edgar Mitchell, Eugene Cernan, Expedition 36, Extravehicular Mobility Unit, Feitian space suit, France, Gemini 12, Gemini 4, Gemini 8, Gemini 9A, Hand-Held Maneuvering Unit, Harrison Schmitt, Intelsat, International Space Station, James Irwin, James S. Voss, Jean-Loup Chrétien, John Young (astronaut), Joseph P. Kerwin, ..., Kathryn D. Sullivan, Kármán line, Ken Mattingly, List of cumulative spacewalk records, List of International Space Station spacewalks, List of Mir spacewalks, List of spacewalkers, List of spacewalks 2000–2014, List of spacewalks and moonwalks 1965–1999, Liu Boming (astronaut), Luca Parmitano, Manned Maneuvering Unit, Michael Collins (astronaut), Michael Foale, Michael López-Alegría, Mir, Moon, Moon rock, NASA, Neil Armstrong, Neutral buoyancy simulation as a training aid, Nikita Khrushchev, Omega Speedmaster, Orlan space suit, Paul J. Weitz, Peggy Whitson, Pete Conrad, Pierre J. Thuot, Primary Life Support System, Project Gemini, Quest Joint Airlock, Richard F. Gordon Jr., Richard Hieb, Robert L. Stewart, Ronald Evans (astronaut), Russia, Salyut 6, Salyut 7, Satellite, Scuba diving, Shenzhou 7, Simplified Aid For EVA Rescue, Skylab, Skylab 2, Solar panels on spacecraft, Soviet Union, Soyuz 4, Soyuz 5, Space adaptation syndrome, Space Shuttle, Space Shuttle Challenger, Space Shuttle Discovery, Space Shuttle Endeavour, Space station, Space suit, Spacecraft, Stephen Robinson, STS-114, STS-41-B, STS-41-G, STS-49, STS-87, Suitport, Susan Helms, Svetlana Savitskaya, Takao Doi, Thomas Akers, Tim Peake, Umbilical cable, United States, University Press of Florida, Vacuum, Vladimir Dzhanibekov, Voskhod (spacecraft), Voskhod 2, Vostok (spacecraft), Weightlessness, Yevgeny Khrunov, Zhai Zhigang. Expand index (79 more) » « Shrink index
An airlock is a device which permits the passage of people and objects between a pressure vessel and its surroundings while minimizing the change of pressure in the vessel and loss of air from it.
Alan LaVern Bean (March 15, 1932 – May 26, 2018) was an American naval officer and naval aviator, aeronautical engineer, test pilot, and NASA astronaut; he was the fourth person to walk on the Moon.
Rear Admiral Alan Bartlett Shepard Jr. (November 18, 1923 – July 21, 1998) was an American astronaut, naval aviator, test pilot, and businessman.
Aleksei Stanislavovich Yeliseyev (Алексей Станиславович Елисеев; born July 13, 1934) is a retired Soviet cosmonaut who flew on three missions in the Soyuz programme as a flight engineer: Soyuz 5, Soyuz 8, and Soyuz 10.
Alexey Arkhipovich Leonov (p; born 30 May 1934 in Listvyanka, West Siberian Krai, Soviet Union) is a retired Soviet/Russian cosmonaut, Air Force Major general, writer and artist.
Alfred Merrill "Al" Worden (born February 7, 1932), (Col, USAF, Ret.), is an American astronaut and engineer who was the Command Module Pilot for the Apollo 15 lunar mission in 1971.
Anatoly Yakovlevich Solovyev (Анатолий Яковлевич Соловьёв; born January 16, 1948 – alternate spelling "Solovyov") is a retired Russian and Soviet cosmonaut and pilot.
Andrew "Andy" Sydney Withiel Thomas, AO (born 18 December 1951 in Adelaide, South Australia) is an Australian-born American aerospace engineer and a NASA astronaut. He became a U.S. citizen in December 1986, hoping to gain entry to NASA's astronaut program. He is married to fellow NASA astronaut Shannon Walker.
The Apollo spacecraft was composed of three parts designed to accomplish the American Apollo program's goal of landing astronauts on the Moon by the end of the 1960s and returning them safely to Earth.
Apollo 11 was the spaceflight that landed the first two humans on the Moon.
Apollo 15 was the ninth manned mission in the United States' Apollo program, the fourth to land on the Moon, and the eighth successful manned mission.
Apollo 16 was the tenth manned mission in the United States Apollo space program, the fifth and penultimate to land on the Moon and the first to land in the lunar highlands.
Apollo 17 was the final mission of NASA's Apollo program.
The Lunar Module (LM, pronounced "Lem"), originally designated the Lunar Excursion Module (LEM), was the lander portion of the Apollo spacecraft built for the US Apollo program by Grumman Aircraft to carry a crew of two from lunar orbit to the surface and back.
The Apollo program, also known as Project Apollo, was the third United States human spaceflight program carried out by the National Aeronautics and Space Administration (NASA), which accomplished landing the first humans on the Moon from 1969 to 1972.
An astronaut or cosmonaut is a person trained by a human spaceflight program to command, pilot, or serve as a crew member of a spacecraft.
An astronaut propulsion unit (or astronaut maneuvering unit) is used to move an astronaut relative to the spaceship during a spacewalk.
Avionics are the electronic systems used on aircraft, artificial satellites, and spacecraft.
Bernard Anthony Harris Jr. (born June 26, 1956 in Temple, Texas) is a former NASA astronaut.
Bruce McCandless II (June 8, 1937 – December 21, 2017) was a U.S. naval officer and aviator, electrical engineer, and NASA astronaut.
Buzz Aldrin (born Edwin Eugene Aldrin Jr.; January 20, 1930) is an American engineer, former astronaut, and Command Pilot in the United States Air Force.
CBS (an initialism of the network's former name, the Columbia Broadcasting System) is an American English language commercial broadcast television network that is a flagship property of CBS Corporation.
Charles Moss "Charlie" Duke Jr. (born October 3, 1935), (Brig Gen, USAF, Ret.), is an American former astronaut, retired U.S. Air Force officer and test pilot.
Arne Christer Fuglesang (born March 18, 1957 in Stockholm) is a Swedish physicist and an ESA astronaut.
Christopher John "Chris" Cassidy (born January 4, 1970, in Salem, Massachusetts) is a NASA astronaut and United States Navy SEAL.
The Cold War was a state of geopolitical tension after World War II between powers in the Eastern Bloc (the Soviet Union and its satellite states) and powers in the Western Bloc (the United States, its NATO allies and others).
The Communist Party of the Soviet Union was the founding and ruling political party of the Soviet Union.
David Randolph Scott (born June 6, 1932) (Col, USAF, Ret.) is an American engineer, former NASA astronaut, retired U.S. Air Force officer and former test pilot.
Decompression sickness (DCS; also known as divers' disease, the bends, aerobullosis, or caisson disease) describes a condition arising from dissolved gases coming out of solution into bubbles inside the body on depressurisation.
Edward Higgins White II (November 14, 1930 – January 27, 1967), (Lt Col, USAF), was an American aeronautical engineer, U.S. Air Force officer, test pilot, and NASA astronaut.
Edgar Dean "Ed" Mitchell (September 17, 1930 – February 4, 2016) was a United States Navy officer and aviator, test pilot, aeronautical engineer, ufologist and NASA astronaut.
Eugene Andrew Cernan (March 14, 1934 – January 16, 2017) was an American astronaut, naval aviator, electrical engineer, aeronautical engineer, and fighter pilot.
Expedition 36 was the 36th long-duration mission to the International Space Station.
The Extravehicular Mobility Unit (EMU) is an independent anthropomorphic spacesuit that provides environmental protection, mobility, life support, and communications for astronauts performing extravehicular activity (EVA) in Earth orbit.
A Feitian space suit is a Chinese spacesuit that was developed for the Shenzhou 7.
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
Gemini 12 (officially Gemini XII) With Gemini IV, NASA changed to Roman numerals for Gemini mission designations.
Gemini 4 (officially Gemini IV) With Gemini IV, NASA changed to Roman numerals for Gemini mission designations.
Gemini 8 (officially Gemini VIII) With Gemini IV, NASA changed to Roman numerals for Gemini mission designations.
Gemini 9A (officially Gemini IX-A) With Gemini IV, NASA changed to Roman numerals for Gemini mission designations.
The Hand-Held Maneuvering Unit (HHMU), also known as the maneuvering gun, or informally as "the zip gun", was used by astronaut Ed White in the first American "spacewalk" (extra-vehicular activity, EVA), on Gemini 4, June 3, 1965.
Harrison Hagan "Jack" Schmitt (born July 3, 1935) is an American geologist, retired NASA astronaut, university professor, former U.S. senator from New Mexico, and the most recent living person to have walked on the Moon.
Intelsat, S.A. is a communications satellite services provider.
The International Space Station (ISS) is a space station, or a habitable artificial satellite, in low Earth orbit.
James Benson "Jim" Irwin (March 17, 1930 – August 8, 1991) (Col, USAF) was an American astronaut, aeronautical engineer, test pilot, and a United States Air Force pilot.
James Shelton Voss (born March 3, 1949) is a retired United States Army Colonel and NASA astronaut.
Jean-Loup Jacques Marie Chrétien (born 20 August 1938) is a French retired Général de Brigade (brigadier general) in the Armée de l'Air (French air force), and a former CNES spationaut.
John Watts Young (September 24, 1930 – January 5, 2018) was an American astronaut, naval officer and aviator, test pilot, and aeronautical engineer.
Joseph Peter Kerwin, M.D. (born February 19, 1932), (Capt, USN, Ret.), is an American physician and former NASA astronaut, who served as Science Pilot for the Skylab 2 mission from May 25–June 22, 1973.
Kathryn Dwyer Sullivan (born October 3, 1951) is an American geologist and a former NASA astronaut.
The Kármán line, or Karman line, lies at an altitude of above Earth's sea level and commonly represents the boundary between Earth's atmosphere and outer space.
Thomas Kenneth Mattingly II (born March 17, 1936), (RADM, USN, Ret.), better known as Ken Mattingly, is a former American naval officer and aviator, aeronautical engineer, test pilot, Rear Admiral in the United States Navy and astronaut who flew on the Apollo 16, STS-4 and STS-51-C missions.
This is a list of cumulative spacewalk records for the 30 astronauts who have the most extra-vehicular activity (EVA) time.
International Space Station spacewalks are major events in the building and maintaining of the orbital laboratory.
Mir (Мир,; lit. Peace or World) was a Soviet and later Russian space station, operational in low Earth orbit from 1986 to 2001.
This is a list of all astronauts who have engaged in an EVA by partly or fully leaving a spacecraft, exclusive of extravehicular activity on the lunar surface.
This list contains all spacewalks performed between 12 May 2000 and 22 October 2014 where an astronaut fully or partially left a spacecraft.
This list contains all spacewalks and moonwalks performed from 1965 to 1999 where an astronaut has fully or partially left a spacecraft.
Liu Boming (born September 1966) is a Chinese pilot selected as part of the Shenzhou program.
Luca Parmitano (born 27 September 1976 in Paternò, Sicily) is an Italian engineer and astronaut in the European Astronaut Corps for the European Space Agency (ESA).
The Manned Maneuvering Unit (MMU) is an astronaut propulsion unit that was used by NASA on three Space Shuttle missions in 1984.
Michael Collins (born October 31, 1930) (Major General, USAF, Ret.) is an American former astronaut and test pilot.
Colin Michael Foale (born 6 January 1957) is a British-American astrophysicist and former NASA astronaut.
Michael López-Alegría (born May 30, 1958) is a Spanish-American astronaut; a veteran of three Space Shuttle missions and one International Space Station mission.
Mir (Мир,; lit. peace or world) was a space station that operated in low Earth orbit from 1986 to 2001, operated by the Soviet Union and later by Russia.
The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.
Moon rock or lunar rock is rock that is found on the Earth's moon, or lunar material collected during the course of human exploration of the Moon.
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
Neil Alden Armstrong (August 5, 1930 – August 25, 2012) was an American astronaut and aeronautical engineer who was the first person to walk on the Moon.
Neutral buoyancy simulation with astronauts immersed in a neutral buoyancy pool, in pressure suits, can help to prepare astronauts for the difficult task of working while outside a spacecraft in an apparently weightless environment.
Nikita Sergeyevich Khrushchev (15 April 1894 – 11 September 1971) was a Soviet statesman who led the Soviet Union during part of the Cold War as the First Secretary of the Communist Party of the Soviet Union from 1953 to 1964, and as Chairman of the Council of Ministers, or Premier, from 1958 to 1964.
Omega Speedmaster is a line of chronograph wristwatches produced by Omega SA.
Cosmonaut Maksim Surayev next to two Orlan-MK models on the International Space Station The Orlan space suit (Орлан meaning sea eagle) is a series of semi-rigid one-piece space suit models designed and built by NPP Zvezda.
Paul Joseph Weitz (July 25, 1932 – October 22, 2017) was an American naval officer and aviator, aeronautical engineer, test pilot, and NASA astronaut, who flew into space twice.
Peggy Annette Whitson (born February 9, 1960) is an American biochemistry researcher, retired NASA astronaut, and former NASA Chief Astronaut.
Charles "Pete" Conrad Jr. (June 2, 1930 – July 8, 1999), (Captain, USN), was an American NASA astronaut, aeronautical engineer, naval officer and aviator, test pilot, and during the Apollo 12 mission became the third man to walk on the Moon.
Pierre Joseph Thuot (born May 19, 1955) is a retired United States Navy Captain and NASA astronaut.
A Primary (or Portable or Personal) Life Support System (or Subsystem) (PLSS), is a device connected to an astronaut or cosmonaut's spacesuit, which allows extra-vehicular activity with maximum freedom, independent of a spacecraft's life support system.
Project Gemini was NASA's second human spaceflight program.
The Quest Joint Airlock, previously known as the Joint Airlock Module, is the primary airlock for the International Space Station.
Richard Francis Gordon Jr. (October 5, 1929 – November 6, 2017) was an American naval officer and aviator, chemist, test pilot, and NASA astronaut.
Richard James Hieb (born September 21, 1955 in Jamestown, North Dakota) is a former NASA astronaut and a veteran of three space shuttle missions.
Robert Lee Stewart (born August 13, 1942) is a retired brigadier general of the United States Army and a former NASA astronaut.
Ronald Ellwin Evans Jr. (November 10, 1933 – April 7, 1990), (Capt, USN), was an American naval officer and aviator, electrical engineer, aeronautical engineer, and NASA astronaut, also one of only 24 people to have flown to the Moon.
Russia (rɐˈsʲijə), officially the Russian Federation (p), is a country in Eurasia. At, Russia is the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 144 million people as of December 2017, excluding Crimea. About 77% of the population live in the western, European part of the country. Russia's capital Moscow is one of the largest cities in the world; other major cities include Saint Petersburg, Novosibirsk, Yekaterinburg and Nizhny Novgorod. Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a wide range of environments and landforms. From northwest to southeast, Russia shares land borders with Norway, Finland, Estonia, Latvia, Lithuania and Poland (both with Kaliningrad Oblast), Belarus, Ukraine, Georgia, Azerbaijan, Kazakhstan, China, Mongolia and North Korea. It shares maritime borders with Japan by the Sea of Okhotsk and the U.S. state of Alaska across the Bering Strait. The East Slavs emerged as a recognizable group in Europe between the 3rd and 8th centuries AD. Founded and ruled by a Varangian warrior elite and their descendants, the medieval state of Rus arose in the 9th century. In 988 it adopted Orthodox Christianity from the Byzantine Empire, beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium. Rus' ultimately disintegrated into a number of smaller states; most of the Rus' lands were overrun by the Mongol invasion and became tributaries of the nomadic Golden Horde in the 13th century. The Grand Duchy of Moscow gradually reunified the surrounding Russian principalities, achieved independence from the Golden Horde. By the 18th century, the nation had greatly expanded through conquest, annexation, and exploration to become the Russian Empire, which was the third largest empire in history, stretching from Poland on the west to Alaska on the east. Following the Russian Revolution, the Russian Soviet Federative Socialist Republic became the largest and leading constituent of the Union of Soviet Socialist Republics, the world's first constitutionally socialist state. The Soviet Union played a decisive role in the Allied victory in World War II, and emerged as a recognized superpower and rival to the United States during the Cold War. The Soviet era saw some of the most significant technological achievements of the 20th century, including the world's first human-made satellite and the launching of the first humans in space. By the end of 1990, the Soviet Union had the world's second largest economy, largest standing military in the world and the largest stockpile of weapons of mass destruction. Following the dissolution of the Soviet Union in 1991, twelve independent republics emerged from the USSR: Russia, Ukraine, Belarus, Kazakhstan, Uzbekistan, Armenia, Azerbaijan, Georgia, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan and the Baltic states regained independence: Estonia, Latvia, Lithuania; the Russian SFSR reconstituted itself as the Russian Federation and is recognized as the continuing legal personality and a successor of the Soviet Union. It is governed as a federal semi-presidential republic. The Russian economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in 2015. Russia's extensive mineral and energy resources are the largest such reserves in the world, making it one of the leading producers of oil and natural gas globally. The country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction. Russia is a great power as well as a regional power and has been characterised as a potential superpower. It is a permanent member of the United Nations Security Council and an active global partner of ASEAN, as well as a member of the G20, the Shanghai Cooperation Organisation (SCO), the Council of Europe, the Asia-Pacific Economic Cooperation (APEC), the Organization for Security and Co-operation in Europe (OSCE), and the World Trade Organization (WTO), as well as being the leading member of the Commonwealth of Independent States (CIS), the Collective Security Treaty Organization (CSTO) and one of the five members of the Eurasian Economic Union (EEU), along with Armenia, Belarus, Kazakhstan and Kyrgyzstan.
Salyut 6 (Салют-6; lit. Salute 6), DOS-5, was a Soviet orbital space station, the eighth flown as part of the Salyut programme.
Salyut 7 (Салют-7; Salute 7) (a.k.a. DOS-6) was a space station in low Earth orbit from April 1982 to February 1991.
In the context of spaceflight, a satellite is an artificial object which has been intentionally placed into orbit.
Scuba diving is a mode of underwater diving where the diver uses a self-contained underwater breathing apparatus (scuba) which is completely independent of surface supply, to breathe underwater.
Shenzhou 7 was the third human spaceflight mission of the Chinese space program.
Simplified Aid For EVA Rescue (SAFER) is a small, self-contained, propulsive backpack system (jet pack) worn during spacewalks, to be used in case of emergency only.
Skylab was the United States' space station that orbited the Earth from 1973 to 1979, when it fell back to Earth amid huge worldwide media attention.
Skylab 2 (also SL-2 and SLM-1) was the first manned mission to Skylab, the first U.S. orbital space station.
Spacecraft operating in the inner Solar System usually rely on the use of photovoltaic solar panels to derive electricity from sunlight.
The Soviet Union, officially the Union of Soviet Socialist Republics (USSR) was a socialist state in Eurasia that existed from 1922 to 1991.
Soyuz 4 (Союз 4, Союз 4, Union 4) was launched on 14 January 1969, carrying cosmonaut Vladimir Shatalov on his first flight.
Soyuz 5 (Союз 5, Union 5) was a Soyuz mission using the Soyuz 7K-OK spacecraft launched by the Soviet Union on 15 January 1969, which docked with Soyuz 4 in orbit.
Space adaptation syndrome (SAS) or space sickness is a condition experienced by around half of space travelers during adaptation to weightlessness.
The Space Shuttle was a partially reusable low Earth orbital spacecraft system operated by the U.S. National Aeronautics and Space Administration (NASA), as part of the Space Shuttle program.
Space Shuttle Challenger (Orbiter Vehicle Designation: OV-099) was the second orbiter of NASA's space shuttle program to be put into service, after ''Columbia''.
Space Shuttle Discovery (Orbiter Vehicle Designation: OV-103) is one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built.
Space Shuttle Endeavour (Orbiter Vehicle Designation: OV-105) is a retired orbiter from NASA's Space Shuttle program and the fifth and final operational shuttle built.
A space station, also known as an orbital station or an orbital space station, is a spacecraft capable of supporting crewmembers, which is designed to remain in space (most commonly as an artificial satellite in low Earth orbit) for an extended period of time and for other spacecraft to dock.
A space suit is a garment worn to keep a human alive in the harsh environment of outer space, vacuum and temperature extremes.
A spacecraft is a vehicle or machine designed to fly in outer space.
Stephen Kern Robinson (born October 26, 1955, in Sacramento, California) is a former NASA astronaut.
STS-114 was the first "Return to Flight" Space Shuttle mission following the Space Shuttle Columbia disaster.
STS-41-B was the tenth NASA Space Shuttle mission and the fourth flight of the.
STS-41-G was the 13th flight of NASA's Space Shuttle program and the sixth flight of Space Shuttle ''Challenger''.
STS-49 was the maiden flight of the Space Shuttle ''Endeavour''.
STS-87 was a Space Shuttle mission launched from Launch Complex 39B of the Kennedy Space Center on 19 November 1997.
A suitport or suitlock is an alternative technology to an airlock, designed for use in hazardous environments and in human spaceflight, especially planetary surface exploration.
Susan Jane Helms (born February 26, 1958) is a retired lieutenant general in the United States Air Force and a former NASA astronaut.
Svetlana Yevgenyevna Savitskaya (Светла́на Евге́ньевна Сави́цкая; born 8 August 1948) is a retired Soviet aviator and cosmonaut who flew aboard Soyuz T-7 in 1982, becoming the second woman in space.
is a Japanese astronaut and a veteran of two NASA space shuttle missions.
Thomas Dale Akers (born May 20, 1951) is a former American astronaut in NASA's Space Shuttle program.
Major Timothy Nigel Peake (born 7 April 1972) is a British Army Air Corps officer, European Space Agency astronaut and a former International Space Station (ISS) crew member.
An umbilical cable or umbilical is a cable and/or hose that supplies required consumables to an apparatus, diver or astronaut.
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
The University Press of Florida (UPF) is the scholarly publishing arm of the State University System of Florida, representing Florida's twelve state universities.
Vacuum is space devoid of matter.
Vladimir Aleksandrovich Dzhanibekov (Владимир Александрович Джанибеков, born 13 May 1942) is a former cosmonaut who made five flights.
The Voskhod ("Sunrise") was a spacecraft built by the Soviet Union's space program for human spaceflight as part of the Voskhod programme.
Voskhod 2 (Sunrise-2) was a Soviet manned space mission in March 1965.
The Vostok (Восток, translated as "East") was a type of spacecraft built by the Soviet Union.
Weightlessness, or an absence of weight, is an absence of stress and strain resulting from externally applied mechanical contact-forces, typically normal forces (from floors, seats, beds, scales, etc.). Counterintuitively, a uniform gravitational field does not by itself cause stress or strain, and a body in free fall in such an environment experiences no g-force acceleration and feels weightless.
Yevgeni Vassilyevich Khrunov (September 10, 1933 – May 20, 2000) was a Soviet cosmonaut who flew on the Soyuz 5/Soyuz 4 mission.
Zhai Zhigang (born October 10, 1966) is a major general in the People's Liberation Army Air Force and a CNSA astronaut.
Camp-out procedure, EVAs, Extra vehicular activity, Extra-Vehicular Activity, Extra-vehicular Activity, Extra-vehicular activities, Extra-vehicular activity, Extravehicular Activity, Lunar excursions, Space walk, Space walks, Spacewalk, Spacewalking, Spacewalks, Trans-Earth EVA.