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Atmospheric entry - Wikipedia, the free encyclopedia

Atmospheric entry - Wikipedia, the free encyclopedia

The Apollo 11 spacecraft Command Module is photographed being hoisted aboard the U.S.S. Hornet, prime recovery ship for the historic lunar landing mission. Note the flotation ring attached by Navy divers is still attached to the capsule. (July 24, 1969)

The Apollo 11 spacecraft Command Module is photographed being hoisted aboard the U.S.S. Hornet, prime recovery ship for the historic lunar landing mission. Note the flotation ring attached by Navy divers is still attached to the capsule. (July 24, 1969)

Jan. 27, 1967. A flash fire aboard the spacecraft Apollo I kills astronauts Virgil "Gus" Grissom, Edward White and Roger Chaffee.

Jan. 27, 1967. A flash fire aboard the spacecraft Apollo I kills astronauts Virgil "Gus" Grissom, Edward White and Roger Chaffee.

NASA Mercury Space Program - These 3 were chosen to complete the first Mercury Flights. Glenn (1st American to Orbit Earth), Grissom and Shepherd (1st American in Space)

NASA Mercury Space Program - These 3 were chosen to complete the first Mercury Flights. Glenn (1st American to Orbit Earth), Grissom and Shepherd (1st American in Space)

See how the first human spaceflight actually occurred when the Soviet Union launched cosmonaut Yuri Gagarin on Vostok 1 on April 12, 1961.

See how the first human spaceflight actually occurred when the Soviet Union launched cosmonaut Yuri Gagarin on Vostok 1 on April 12, 1961.

Spacesuits used by the Apollo astronauts were no longer air-cooled. A nylon undergarment mesh allowed the astronaut's body to be cooled with water - similar to way a radiator cools a car's engine.  Additional layers of fabric allowed for better pressurization and additional heat protection.  Astronaut Alan B. Shepard Jr. undergoes suiting up operations at the Kennedy Space Center during the Apollo 14 prelaunch countdown. Shepard is the commander of the Apollo 14 lunar landing mission.

Spacesuits used by the Apollo astronauts were no longer air-cooled. A nylon undergarment mesh allowed the astronaut's body to be cooled with water - similar to way a radiator cools a car's engine. Additional layers of fabric allowed for better pressurization and additional heat protection. Astronaut Alan B. Shepard Jr. undergoes suiting up operations at the Kennedy Space Center during the Apollo 14 prelaunch countdown. Shepard is the commander of the Apollo 14 lunar landing mission.

This G3-C spacesuit was worn by Virgil "Gus" Grissom during the Gemini 3 mission launched on March 23, 1965.  He flew on the three-orbit, five-hour mission with astronaut John Young.

This G3-C spacesuit was worn by Virgil "Gus" Grissom during the Gemini 3 mission launched on March 23, 1965. He flew on the three-orbit, five-hour mission with astronaut John Young.

The Lunar Module "Spider" ascent stage is photographed from the Command/Service Module on the fifth day of the Apollo 9 earth-orbital mission. The Lunar Module's descent stage had already been jettisoned. (Image credit: NASA/David Scott)

The Lunar Module "Spider" ascent stage is photographed from the Command/Service Module on the fifth day of the Apollo 9 earth-orbital mission. The Lunar Module's descent stage had already been jettisoned. (Image credit: NASA/David Scott)

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