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Discovery NASA: Gemini 4 Mission Spacewalk

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From the NASA Video Vault on Discovery.com: Astronaut Ed White's spacewalk featured in the 1965 NASA film "Four Days of Gemini 4."

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Astronaut Runs Boston Marathon from Space (0:58)

Watch this video about astronauts on HowStuffWorks. Sunita Williams is an astronaut on the International Space Station, where she has been training for the Boston Marathon. She plans to run the 26.2 miles while tethered to a treadmill inside the... More »

Can You Hear a Spaceship in Space (0:59)

Watch this video about how science fiction isn't always right. Can you hear a spaceship in space? See why this is not technically possible because of the laws of physics in this video from NASA Brain Bites.

Women Rule Space (0:42)

Watch this Reuters video showing, for the first time ever, two female commanders docking the Space Shuttle with the International Space Station. Peggy Whitson is the first female station commander and Pam Melroy is the second woman to command a... More »

Space Tourism on the ISS (0:49)

Watch this video about space tourism on the International Space Station on HowStuffWorks. Three astronauts - a cosmonaut, an-ex Microsoft executive and a NASA astronaut - returned to Earth safely after several months in the International Space... More »

Space Walk on the International Space Station (1:05)

Watch this video about a space walk to repair the International Space Station. Astronauts went on a space walk to finish installing a pair of electricity-producing wing panels so the sun can be tracked for power. See how space walks work in this... More »

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The Year in Space 2000: Astronauts Train Underwater (2:59)

At NASA's Neutral Buoyancy Lab (NBL), astronauts train underwater, which simulates working in space. Watch the training on the Science Channel's "The Year in Space 2000."

Liftoff Into Space: Rockets (5:59)

This video provides an introduction to the history of rocket development, from the Chinese invention of fireworks to the Soviet space shuttle.

A History of Space Flight: The Colonization of Space (2:30)

Ideas for future space travel include aerospace planes, bulk transporters, and space-penetrating towers leading to possible colonization of the Moon, Mars and beyond.

A History of Space Flight: The Soviet Station and MIA (0:50)

The U.S. launched a series of space shuttles, while the former Soviet Union put space stations in orbit.

A History of Space Flight: The Apollo Missions (1:45)

The U.S. Apollo project successfully landed men on the Moon. Crippled by an explosion, Apollo 13 returned to Earth without a lunar landing.

A History of Space Flight: The Race to the Moon (1:49)

Pursuing the goal set forth by President Kennedy, the U.S. space program prepared to put a man on the Moon before the end of the 1960s.

A History of Space Flight: Rockets and Satellites (2:07)

The U.S. and the former Soviet Union competed to put unmanned and manned spacecraft in orbit around the Earth.

A History of Space Flight: Space Stations of the Future (0:38)

A space station of the future may be used as a port from which to launch trips to distant planets. Check out this clip to learn more space exploration.

Liftoff Into Space: Space Suits and Their Functions (2:22)

Humans need special equipment and supplies to survive in space. Space suits provide air and protection from the extreme cold and low pressure of outer space.

The Ultimate Guide: NASA Simulation (1:27)

Check out this video to learn about how NASA plans to reorient astronauts to gravity while in space if there is a mission to Mars.