Astronomical Risks: How Astronauts (Narrowly) Survive Space

Disaster struck the Apollo 13 lunar landing mission on April 13, 1970, when an oxygen tank exploded. How did the astronauts get back to Earth safely?

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Apollo 13: Rescue Mission

In April 1970, Apollo 13 experienced a violent explosion. Learn how the astronauts were able to survive on Discovery Channel's "Apollo 13."


In April 1970, Apollo 13 experienced a violent explosion. Learn how the astronauts were able to survive on Discovery Channel's "Apollo 13."
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Apollo 13: Rescue Mission

Astronauts train extensively before going into space. For every hour that they are going to be outside of the space station, they practice for ten hours on Earth. Learn more about astronaut training on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Astronaut Training

Space can be a hazardous place and tragic things can happen. Learn more about the possible dangers on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Dangers in Space

On Discovery Channel's series, "Assignment Discovery," scientists try to study genesis rocks. These rocks that may explain the origin of the moon.
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Assignment Discovery: Genesis Rocks

Outer space is hazardous for humans because of no air, extreme temperatures and micro asteroids. Learn more about outer space on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Hazardous Outer Space

Astronauts train for every aspect of their space missions, and the launch is no different. Because of the massive amount of rocket fuel used, it is also the most dangerous part of the trip. Learn more on Discovery Channel's series "Assignment Discovery."
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Assignment Discovery: Launch Training

Get a first hand look inside life in the space station on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Life in the Space Station

Scientists at NASA are developing technologies to address medical procedures in space. Learn more about medicine in space on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Medicine in Space

In the future astronauts will have a personal satellite assistant (PSA) to help with missions. Learn more about this device on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Personal Satellite Assistant

On Discovery Channel's "Assignment Discovery," learn how gold is used to reflect sunlight from churches and temples to astronaut and space shuttle equipment.
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Assignment Discovery: Reflecting Sunlight Using Gold

The most dangerous part of the trip to outer space is the launch. Hear about trips to outer space on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Shuttle Launch

The Crew Return Vehicle (CRV) is the first vehicle uniquely designed for space rescue. Learn more about this vehicle on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Space Rescue

On December 3, 1998 the Unity Module was launched into space to begin construction on the International Space Station. Learn more about the space station on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Space Station Construction

The International Space Station consists of an international crew. Meet a few of the crew members on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Space Station Crew

Learn about the things astronauts do during their free time on a space station on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Space Station Work and Play

The Discovery Channel's series, "Assignment Discovery," provides a brief synopsis of the space race that started in 1957 between the United States and U.S.S.R. Learn more in this video.
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Assignment Discovery: Synopsis of Space Race

In case there is an emergency at launch the astronauts need to be prepared for a water rescue. Learn more about water rescue training on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Water Rescue

Weightlessness has a traumatic effect on the human body, resulting in muscle loss. Astronauts, once back on Earth, have to strengthen themselves all over again. Learn more about weightlessness on Discovery Channel's "Assignment Discovery."
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Assignment Discovery: Weightlessness in Space

Astronauts need to stay clean, too. Find out what it takes to stay clean in space in this clip from the archives of Discovery.
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Astronaut Hygiene

Watch this NASA video to hear from NASA's first flight director, Chris Kraft. See clips from some of Kraft's most memorable moments in the space program like the Mercury program and the first lunar orbit.
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Astronaut Talks: Chris Kraft

Watch this NASA video to learn more about NASA astronauts and what it takes to become a NASA employee, as well as some memories of spaceflight.
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Astronaut Talks: Joan Higginbotham

Watch this NASA video to hear from NASA space architect, Larry Toups. Learn about his ideas and concepts that revolutionized spaceflight and space exploration.
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Astronaut Talks: Larry Toups

Watch this NASA video to hear from famed NASA Apollo XI astronaut, Walt Cunningham. See clips from some of his most memorable moments in the space program like the first steps on the moon.
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Astronaut Talks: Michael Collins

Watch this NASA video to hear from famed NASA Apollo VII astronaut, Walt Cunningham. See clips from some of his most memorable moments in the space program like the first steps on the moon.
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Astronaut Talks: Walt Cunningham

From the archives of Discovery: In the zero-gravity environment of space, astronauts learn to float. Learn more about astronauts in this video .
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Astronauts

Astronauts prepare rigorously for every aspect of a space mission, including launch day. Find out what it takes to launch the space shuttle in this clip from Discovery's archives.
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Astronauts Get Ready

Watch this NASA video to learn how astronauts practice their missions before climbing in the Space Shuttle. Astronauts practice every single thing they'll do while in orbit, even emergency situations.
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Astronauts Practice Space Moves

Watch this NOVA video podcast to learn more about what it's really like to be an astronaut. It is not all glitz, glamor and zero-gravity. The spacesuit is not very comfortable and astronauts are in them for up to eight hours at a time with no food.
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Astronauts Training on Earth

In this clip from the archives of Discovery, learn more about the special equipment astronauts use to keep from flying off into space while they work.
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Astronauts Working on the Shuttle's Exterior 2

At Sky lab astronauts are able to keep in contact with mission control from outer space.
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Big, Bigger, Biggest: Space Communication

An improvement from early space suits, astronauts now have the ability to travel outside of the space station without limited maneuverability.
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Big, Bigger, Biggest: Space Suits

Dr. Buzz Aldrin, former NASA astronaut and space exploration advocate, discusses his impressions of microgravity in this video from the Science Channel.
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Brains of Science: Buzz Aldrin

In 2003, the space shuttle Columbia disintegrated upon reentry into the Earth's atmosphere. It was discovered that debris from the rockets, damaged the shuttle's protective wing. Learn more about Columbia on Discovery Channel's "Coming Home From Space."
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Coming Home From Space: Columbia Disaster

Watch this NASA video to learn more about the specialized tools that astronauts use in spaceflight. You can't just run to Home Depot and buy space tools. Each is specially built so that astronauts can use them with their space suits.
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Cool Space Tools

On TLC's "Destination Mars," explore the possibility of creating artificial gravity in spaceflight in order to keep the astronauts strong while traveling in space.
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Destination Mars: Artificial Gravity

On TLC's "Destination Mars," an Apollo astronaut describes what it's like to be in space.
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Destination Mars: Being in Space

When selecting the crew for the first mission to Mars, physical qualities are just one thing that's considered. On TLC's "Destination Mars," the Russians are testing the psychological strength of candidates.
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Destination Mars: Crew Selection for Mars

On TLC's "Destination Mars," learn about the importance of exercise in helping to retain bone strength and muscles while in space.
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Destination Mars: NASA Space Workout

In order to test the mental endurance of cosmonauts, the Russians use a silent chamber. On TLC's "Destination Mars," watch as one cosmonaut goes through rigorous testing with no sleep.
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Destination Mars: Russian Silent Chamber

As NASA works more with space programs of other countries, cultural education has become an important part of an astronaut's training. Watch as an instructor and trainee engage in a role playing exercise on TLC's "Destination Mars."
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Destination Mars: Space Culture

In space, our bones and muscles lose their calcium and strength. In this clip from TLC's "Destination Mars" we learn how to use exercise to counteract zero gravity and stay strong.
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Destination Mars: Zero Gravity Exercise

Learn more about the International Space Station in this video from the archives of Discovery.
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Diagram of the International Space Station

From the NASA Video Vault on Discovery.com: An Apollo 12 astronaut, Al Bean, tells how he decided to devote his life painting his experiences on the moon.
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Discovery NASA: Al Bean

From the NASA Video Vault on Discovery.com: Highlights from the 1970 NASA film "Flight of Apollo 11: The Eagle Has Landed," featuring the crew's return, quarantine period and public reception.
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Discovery NASA: Apollo 11 Mission Return

From the NASA Video Vault on Discovery.com: NASA archive footage featuring events associated with the return of the Apollo 11 astronauts, including the quarantine period and ticker-tape parades.
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Discovery NASA: Apollo 11 Mission Return

From the NASA Video Vault on Discovery.com: Highlights from the NASA film "Apollo 13: Houston, We've Got A Problem," featuring the critical period when the mission was just to get the crew home safely.
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Discovery NASA: Apollo 13

From the NASA Video Vault on Discovery.com: Highlights from the 1972 NASA film "Apollo 13: Houston, We've Got A Problem," featuring the preparatory phase to the mid-flight explosion and mission abort.
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Discovery NASA: Apollo 13 Mission Preparation

From the NASA Video Vault on Discovery.com: NASA archive footage of the December 1972 liftoff of Apollo 17 that lit up the Florida sky in the only night launch of the Apollo program.
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Discovery NASA: Apollo 17 Mission Liftoff

From the NASA Video Vault on Discovery.com: NASA archive footage featuring a selection of mission films taking during Apollo 8's lunar and Earth orbits.
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Discovery NASA: Apollo 8 Mission Orbits

From the NASA Video Vault on Discovery.com: NASA archive footage of Apollo 9's Lunar Module in Earth orbit during its first space test.
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Discovery NASA: Apollo 9 Mission Orbit

From the NASA Video Vault on Discovery.com: Highlights from the NASA film "The Mission of Apollo Soyuz," featuring the preparation for the 1975 joint flight of the Soviet and American space programs.
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Discovery NASA: Apollo Soyuz

From the NASA Video Vault on Discovery.com: Highlights from the NASA film "The Mission of Apollo Soyuz," featuring the rendezvous and docking of the two vehicles and reflections on the future of international projects.
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Discovery NASA: Apollo Soyuz Dock

From the NASA Video Vault on Discovery.com: The legendary Father of Flight Operations, Chris Kraft, tells why being flight director for manned programs is the best job around.
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Discovery NASA: Chris Kraft

From the NASA Video Vault on Discovery.com: Highlights from a NASA film on Freedom 7 from pre-launch sequence through Alan Shepard's historic 15-minute flight.
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Discovery NASA: Freedom 7 Pre Launch

From the NASA Video Vault on Discovery.com: Highlights from a NASA film on Friendship 7 covering the launch and orbital insertion of astronaut John Glenn's Mercury-Atlas rocket.
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Discovery NASA: Friendship 7 Launch

From the NASA Video Vault on Discovery.com: Highlights from a NASA film on Friendship 7 including the reentry and capsule recovery phases of the mission.
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Discovery NASA: Friendship 7 Reentry

From the NASA Video Vault on Discovery.com: NASA film archive footage of Ed White's Gemini 4 spacewalk, with rarely seen capsule interior shots.
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Discovery NASA: Gemini 4 Mission Interior

From the NASA Video Vault on Discovery.com: NASA film archive footage from on-board cameras during the Gemini 6 and Gemini 7 orbital rendezvous.
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Discovery NASA: Gemini 6 and 7 Archive

From the NASA Video Vault on Discovery.com: Highlights from the 1966 NASA film "Proud Conquest," featuring the overview and launch coverage of the joint Gemini 6 and Gemini 7 mission.
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Discovery NASA: Gemini 6 and 7 Highlights

From the NASA Video Vault on Discovery.com: Highlights from the 1966 NASA film "Proud Conquest," featuring the historic orbital rendezvous and station keeping carried out by the two Gemini capsules.
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Discovery NASA: Gemini 6 and 7 Missions

From the NASA Video Vault on Discovery.com: NASA film archive footage from on-board cameras during Gemini 8's docking and emergency undock with the Agena Target Vehicle.
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Discovery NASA: Gemini 8 Mission Dock

From the NASA Video Vault on Discovery.com: NASA film archive footage of Gemini 9's failed attempt to dock with the new ADTA target vehicle after it's shroud failed to separate.
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Discovery NASA: Gemini 9 Mission Dock

From the NASA Video Vault on Discovery.com: A veteran astronaut, Gene Cernan, remembers the science and adventure he found on the moon during the Apollo 17 mission.
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Discovery NASA: Gene Cernan

From the NASA Video Vault on Discovery.com: The celebrated NASA flight director, Gene Kranz, remembers the Apollo 11 landing and the ordeal of Apollo 13.
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Discovery NASA: Gene Kranz

From the NASA Video Vault on Discovery.com: Final preparations of the Hubble Space Telescope and the launch of STS-31 that carried the telescope into Earth orbit in April, 1990.
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Discovery NASA: Hubble Deployment

From the NASA Video Vault on Discovery.com: The lead aerospace engineer for the Hubble Program, James Crocker, recalls the challenges faced during the Hubble repair mission.
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Discovery NASA: James Crocker

From the NASA Video Vault on Discovery.com: NASA's famous space suit engineer/designer, Joe Kosmo,  discusses the challenges of coming up with the best models.
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Discovery NASA: Joe Kosmo

From the NASA Video Vault on Discovery.com: Methane, a building block for life, has been discovered for the first time on a planet 63 light years away from Earth. James Williams researches the implications of the find.
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Discovery NASA: Methane in Space

From the NASA Video Vault on Discovery.com: Methane, a building block for life, has been discovered for the first time on a planet 63 light years away from Earth. James Williams researches the implications of the find.
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Discovery NASA: Methane in Space

From the NASA Video Vault on Discovery.com: An Apollo 11 astronaut, Michael Collins, talks about the critical role of the Gemini missions and man's future in space.
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Discovery NASA: Michael Collins

From the NASA Video Vault on Discovery.com: A rocket builder and propulsion engineer, Norm Chaffee, remembers the day they almost froze the rocket fuel on Apollo 13.
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Discovery NASA: Norm Chaffee

From the NASA Video Vault on Discovery.com: One of NASA's first female astronauts, Shannon Lucid, discusses her journey to become a member of America's space program.
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Discovery NASA: Shannon Lucid

From the NASA Video Vault on Discovery.com: An Apollo 7 astronaut, Walt Cunningham, recounts the greatest moments of NASA's history, especially the legacy of the Space Shuttle program.
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Discovery NASA: Walt Cunningham

What's the tastiest space food? James Williams catches up with NASA astronaut Leroy Chiao to find out.
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Discovery News 2009: Tastiest Space Food

Have you ever wondered what it's like to be an astronaut? Kasey-Dee Gardner introduces you to Space Shuttle Commander Stephen Frick in this Discovery News video.
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Discovery News: Cool Jobs: Astronaut

What does Earth look like from orbit? Find out in this clip from the archives of Discovery.
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Earth From Orbit 1

The space shuttle must create an environment where humans and machines can survive. The life support system controls the air pressure, humidity and temperature. Learn more on the Learning Channel's "Extreme Machines."
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Extreme Machines: Space Shuttle Micro

Watch this NASA video to see how NASA plans to build an outpost on the moon. NASA astronauts first walked on the moon on July 21, 1969. Learn all the obstacles that these astronauts will have to overcome and how they plan to achieve this mission.
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First Steps for Lunar Impactor

Watch this video about future space food concerns on HowStuffWorks. This segment describes the problems with long duration space travel such as bone loss, food stability, food nutrition and the need for astronauts to have alternative food sources once the
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Future Space Food Concerns

This clip from Planet Green's "G Word," gives us a bird's eye view of the earth from the International Space Station. NASA's aerial photographs offer a rare glimpse at our ever changing environment.
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G Word: Photography from Space

Watch this NASA video to see some of the training exercises that astronauts undergo in preparation for a shuttle liftoff. It's not just about rocketing off into space. The astronauts have to be well-versed in emergency situations as well.
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How do astronauts practice a shuttle liftoff?

Did you know each astronaut gets a pair of custom made gloves? These gloves cost $40,000 a pair to produce. Learn more about the creation process on Discovery Channel's "Assignment Discovery."
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How Do They Do It: Astronaut Gloves

Hubble's journey to space is a go and since its launch has not ceased to amaze with its findings. Mission accomplished!
2:09

Hubble Live 2009 Spots: Accomplishment

What can be learned by extending the life of the Hubble Space Telescope by 10 years? Astrophysicists hope to find answers to things they have always imagined.
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Hubble Live 2009 Spots: Promise

Four astronauts working in two teams will work to make Hubble Space Telescope repairs during a spacewalk.
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Hubble Live 2009 Spots: Spacewalk

While in Florida, Kate and the kids witness a rocket launch.
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Kate Plus Eight: Blast Off

How can scientists determine the best crew for the first mission to Mars? Learn more about Mars in this video.
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Mars Rising 4

Go behind the scenes with the European Space Agency. Learn more about the mission to Mars in this video.
1:52

Mars Rising: Episode 2

What does the human body need to survive during a mission to Mars? Learn more about Mars in this video.
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Mars Rising: Episode 3

Chris Barrie, host of Discovery Channel's "Massive Engines," takes a trip back in time to the Apollo 11 mission, which made space history for the United States by landing the first astronauts on the moon.
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Massive Engines: Race to the Moon

On Discovery Channel's "Massive Engines," host Chris Barrie gives us a tour of the Saturn V rocket engine. The Saturn V rocket engine gave the United States the edge in the race to be first to land on the moon.
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Massive Engines: Saturn V Moon Rocket

From the archives of Discovery: During a space flight, mission control continuously monitors the shuttle, keeping a close watch on the technical aspects of launch, orbit, and landing. Learn more about NASA in this video.
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Mission Control

On The Science Channel's "Moon Machines," learn about the trials and tests that were done in order to develop the modern space suit.
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Moon Machines: Developing the Space Suits

After a disastrous accident, learn how NASA developed nonflammable spacesuits using a material called beta cloth on The Science Channel's "Moon Machines."
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Moon Machines: Nonflammable Spacesuits

On The Science Channel's "Moon Machines," learn about the features and challenges of creating a glove on a space suit.
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Moon Machines: Space Glove

From the archives of Discovery: When NASA astronauts return with moon rocks, teams of scientists run the rocks through a battery of tests to analyze their properties. Learn more about NASA and moon rocks in this video.
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Moon Rock Study

Watch this video about  astronaut training on HowStuffWorks. Whether you're a professional skateboarder like Anthony Furlong or a NASA astronaut, training is essential to your success. Action sports athletes have parks around the world for practicing thei
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NASA Astronaut Training

Watch this video showing U.S. Olympic Snowboarder, Hannah Tetter, explain how a snowboarder is like an astronaut in this video from NASA Brain Bites.
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NASA Astronauts

Watch this video about space food preparation on HowStuffWorks. This segment describes the process of preparing food for space, and how astronauts prepare and eat food. The Space Food Preparation segment also describes how food is stored and the character
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NASA Explains Space Food Preparation

Watch this video about space food processing on HowStuffWorks. This segment describes the different food types, labels and packages that space food can have. The Space Food Processing segment describes how freeze dried food is rehydrated and how astronaut
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NASA Explains Space Food Processing

Watch this video about spacesuits on HowStuffWorks. This NASA Destination Tomorrow Segment is describing spacesuit design and how modern suits have adapted with time. Learn how spacesuits work in this video from NASA Destination Tomorrow.
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NASA Explains Spacesuits

A space shuttle's camera captured several white blinking dots on film near planet Earth. What are these objects and why were they blinking?
2:45

NASA's Unexplained Files: Blinking Dots

James McDivitt, a NASA astronaut and engineer in the 1960's, reported he saw and filmed a strange object in space. Is there a logical explanation or was there really something out there?
1:46

NASA's Unexplained Files: Something Out There

The U.S. Air Force created the Condon Report in 1968 to address supposed UFO sightings. The report stated that "further extensive study of UFO's probably cannot be justified" and is seen by some as an attempted cover up.
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NASA's Unexplained Files: The Condon Report

From the archives of Discovery: President Nixon speaks with a group of astronauts quarantined after landing from space. Learn more about astronauts in this video.
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Nixon Quarantine

On Discovery Channel's "One Step Beyond," meet one of NASA's smell testers whose job it is to test samples for toxicity as well as smell quality. Ultimately, he determines what substances can board the spacecraft.
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One Step Beyond: NASA Smell Test

On Discovery Channel's "Planet Storm," learn about the severe dust storms on Mars and the potential danger it poses to future astronauts who will one day land on Mars.
2:38

Planet Storm: Mars Weather

On Discovery Channel's "Planet Storm," learn about solar storms and how they can effect the Earth and astronauts in space.
2:31

Planet Storm: Solar Storm

A yardang is a sand dune that has been shaped by wind. Some of the greatest yardangs are found on the planet Mars. Learn more about Mars' yardangs on Discovery Channel's "Planet Stormo"
1:59

Planet Storm: Yardangs on Mars

Watch this video about Project Gemini on HowStuffWorks. This NASA Destination Tomorrow Segment explores the history of Project Gemini that was instrumental in getting man to the moon. Learn how Project Gemini worked in this video from NASA Destination Tom
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Project Gemini In-Depth

Astronauts are getting ready to visit the Hubble Space Telescope for the last time. The Hubble Space Telescope is due to retire in 2014, so this is NASA's last chance to repair any failed parts and add new technology and features.
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Repairing Hubble One Last Time

On Discovery Channel's "Science of the Impossible," take a visit to NASA's Regenerative Life Support program where research is being conducted on how to keep producing enough food, air and water for astronauts on long space trips.
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Science of the Impossible: Astronaut Life Support

On Discovery Channel's "Science of the Impossible," learn about the credentials a space program looks for in selecting astronauts.
2:33

Science of the Impossible: Being an Astronaut

On Discovery Channel's "Science of the Impossible," learn how technology could one day allow us to settle on other planets.
2:54

Science of the Impossible: Settling on Another Planet

On Discovery Channel's "Science of the Impossible," learn how virtual reality can be used to control robots in space.
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Science of the Impossible: VR Space Robot

On Discovery Channel's "Science of the the Impossible," learn about the harm zero gravity does to the human body.
2:57

Science of the Impossible: Zero Gravity

From the archives of Discovery: When re-entering earth's atmosphere, the space shuttle deploys a parachute to help slow the shuttle's descent. Learn more about space shuttles in this video.
0:38

Shuttle Landing with a Parachute

From the archives of Discovery: Astronauts must train for any situation.  Learn more about training in this video.
0:38

Shuttle Simulator

On TLC's "Solar Empire," learn about experiments to create effective life support systems that will keep astronauts alive for long space missions.
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Solar Empire: Astronaut Life Support in Space

On TLC's "Solar Empire," learn about farming in space and how being able to grow crops such as potatoes and wheat will be critical to long space missions.
2:53

Solar Empire: Farming in Space

On TLC's "Solar Empire," learn about the possibility of living in space and future settlements on the moon and Mars.
2:47

Solar Empire: Living in Outer Space

UFOs! Robonauts! Personal travel pods! See them here in our weekly Discovery News video review.
2:54

Space: DNews Top Video Picks, Episode 1

New toilets, beds and a fridge are being installed in the ISS. Dave Mosher and James Williams hammer out the details. Learn more in this clip from the Science Channel's "Space" series.
2:23

Space: New Digs For The Space Station

Cutting-edge robots, recently unveiled by NASA and General Motors, will work next to humans on Earth and in space. Jorge Ribas reports on the twin machines dubbed Robonaut 2.
1:42

Space: Robonaut 2, Your Future Coworker

The Kennedy Space Center in Florida offers a space shuttle launch simulation ride to tourists that even astronauts admit mimics the real thing. Discovery News' Kasey-Dee Gardner takes it for a spin.
1:55

Space: Space Shuttle Simulation Mimics Launch

Yuri's Night celebrates space exploration around the world. Discovery Space producer Dave Mosher gets inside the jam to see what it's all about
1:51

Space: World's Biggest Space Party

Did NASA ever conduct sex experiments in space? Is it even possible to have sex in space? Find out in this humorous video from the Discovery Channel's "Spaced Out."
4:13

Spaced Out: Sex in Space

What really happens to the human body in outer space? Find out in this video from the Science Channel's "Spaced Out."
3:24

Spaced Out: The Human Body in Space

Planning for more advanced missions to other destinations in space poses new challenges for space suit engineers. Learn of some of the issues on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:57

Spacewalkers: Advancing the Spacesuit

On Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act," astronauts John Grunsfeld and Steve Smith share some of the many challenges and problems that are normal in a spacewalk.
3:01

Spacewalkers: Anomalies in Spacewalk

On Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act," learn about the many details and specs on a spacesuit that makes it like an astronaut's personal spaceship.
2:27

Spacewalkers: Astronaut's Personal Spaceships

During an EVA (extra-vehicular activity) on the moon, the Apollo astronauts figured out the best way to get around was bunny hopping. Learn more on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:43

Spacewalkers: Bunny Hopping on the Moon

Developing new gloves for spacesuits is a continuous mission. Spacesuit engineer Amy Ross, describes the newest model of space glove on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:58

Spacewalkers: Developing the Space

On Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act," learn about some of the main features of the spacesuit such as glove heaters, a water bag and a space diaper.
2:39

Spacewalkers: EVA Suit Features

Another term that is used to describe a spacewalk is extra-vehicular activity (EVA). Learn about some of the first EVA missions on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:46

Spacewalkers: Extra Vehicular Activity

The International Space Station (ISS) will be the most complex spacecraft ever built. Learn about the construction of the ISS on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:41

Spacewalkers: International Space Station

New equipment is being developed for the potential scavenging of the Mars surface. Rocky 7 and Nomad are prototypes being tested for this mission. Learn more about these robots on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:53

Spacewalkers: Mars Space Robots

In 1999, astronauts were sent on a spacewalk mission to repair parts of the Hubble telescope. This extra-vehicular activity was both dangerous and dramatic. Learn more on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
3:01

Spacewalkers: Repairing the Hubble Telescope

The Russian spacesuit differs dramatically from the American spacesuit. It was developed with a different mission in mind. Learn more about Russian spacesuits on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:01

Spacewalkers: Russian Spacesuit

The safe diver's responsibility is to take care of the astronauts training in the neutral buoyancy lab. Their lives depend on it. Learn more about the safe divers on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:27

Spacewalkers: Safe Divers

On Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act," learn about the special tools used in space missions and their features.
1:33

Spacewalkers: Space Walker Tools

One of the training methods for astronauts is to practice in the neutral buoyancy lab. This large water tank simulates spacewalking. Watch a training exercise on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
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Spacewalkers: Spacewalk Training

In order to train for spacewalks, astronauts are put through vigorous training. One of the tasks is surviving a ride on the KC-135 Stratotanker or the Vomit Comet. Learn more on Discovery Channel's "Spacewalkers: The Ultimate High-Wire Act."
2:08

Spacewalkers: The Vomit Comet

Hawking and other visionary physicists consider the possibility of using wormholes as portals to the past and future.
2:22

Stephen Hawking's Universe: A Walk In Time

The immense gravity of black holes makes them natural time machines. Someday spacecraft may be able use them to journey into the future.
2:32

Stephen Hawking's Universe: Black Hole Time

Hawking uses a variation of the "grandfather paradox" to show why time travel can give cosmologists nightmares.
1:51

Stephen Hawking's Universe: Mad Scientist Paradox

In the future, a massive spaceship built for extreme velocities could accelerate to near light speed and travel into the future.
2:40

Stephen Hawking's Universe: Time Travel Starship

If we could ever open a massive wormhole, could it be used as a portal for journeys to distant planets or the deep past?
1:34

Stephen Hawking's Universe: Wormhole Voyages

The first tests of the Lunar Landing Research Vehicle were carefully gauged so as to best mimic the real gravity conditions that astronauts might face on the moon. Watch the LLRV test flight in this clip from the Discovery Channel's "Strange Planes."
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Strange Planes: LLRV Test Flight

Watch this video about future missions to Mars on HowStuffWorks. This segment of NASA Destination Tomorrow is explaining the challenges that astronauts face with living and working on other planets. This segment also explores issues such as radiation, gra
10:10

The Challenges of Living and Working on Mars

Watch this video about long duration space travel on HowStuffWorks. This segment of NASA Destination Tomorrow is explaining the challenges that astronauts face with prolonged exposure to the space environment. This segment also explores issues such as rad
8:05

The Challenges of Living in Space

Watch this video about food technology in long space trips on HowStuffWorks. This segment contains describes the technology and goals for food on space missions. The Food Tech in Long Space Trip segment describes how food is stored, and the challenges of
11:43

The Challenges of Providing Food in Space

Watch this video about space capsule design on HowStuffWorks. This NASA Destination Tomorrow Segment is describing how Dr. Maxime Faget's space capsule design helped launch the United States into the Space Age. Learn how space capsules work in this video
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The History of Space Capsule Design

After completing a successful return to flight mission, Discovery is given the go ahead to land. This will be the first landing since the crash of Columbia. Watch the reentry on Discovery Channel's "The Space Shuttle: Countdown to Comeback."
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The Space Shuttle: Landing of Discovery

On Discovery Channel's "The Space Shuttle: Countdown to Comeback," watch as the crew of the STS-114 gets the green light to launch. This was the first space shuttle flight since the Columbia crash.
2:45

The Space Shuttle: Launch of Shuttle Discovery

The purpose of the first spacewalk of this mission is to test heat shield repair materials and tools. Watch as the astronauts finally get to test their well practiced skills in space on Discovery Channel's "The Space Shuttle: Countdown to Comeback."
2:45

The Space Shuttle: Repair Spacewalk

The return to flight mission is nearing its last day. Before returning to Earth, the crew has to remove protruding gap fillers from the shuttle's front. Follow this dangerous mission on Discovery Channel's "The Space Shuttle: Countdown to Comeback."
3:01

The Space Shuttle: Space Shuttle Gap Filler

The space suit is an astronaut's personal spaceship. This suit enables a person to survive in the vacuum of space. Learn more about the space suit and what it's made of on The Science Channel's "The Year in Space 2000."
1:23

The Year in Space 2000:

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."
2:59

The Year in Space 2000: Astronauts Train Underwater

Space food consists of tightly sealed foods that cannot spoil or become contaminated. Some of the food astronauts eat in space are actually from the supermarket. Learn more about space food on The Science Channel's "The Year in Space 2000."
0:52

The Year in Space 2000: Space Food

In 2000, the space shuttle Endeavor deployed radar topography to map out the entire earth. The goal is to help scientists discover natural disasters before they occur. Learn more about Endeavor on The Science Channel's "The Year in Space 2000."
1:18

The Year in Space 2000: Space Shuttle Topography

On The Science Channel's "Year in Space 2000," the Hubble Telescope, a 3 billion dollar satellite, has faced numerous problems since its deployment. Luckily NASA was able to send missions to fix the satellite.
2:54

The Year in Space 2000: The Hubble Telescope

On The Science Channel's "The Year in Space 2000," learn how working in space can create a number of problems due to the zero gravity atmosphere. NASA has devised special equipment to enable the astronauts to work efficiently and safely in space.
2:36

The Year in Space 2000: Working in Space

For NASA's 50th birthday, the team at Discovery News assembled their top 5 favorite NASA videos from the last half-century. There is some truly amazing stuff in these clips.
2:24

Top 5 NASA Videos

On TLC's "Ultra Science," learn how astronauts adapt psychologically to space travel.
0:58

Ultra Science: Astronaut's Mentality in Space

On TLC's "Ultra Science," learn about the ways astronauts would recycle accumulated waste on a long space trip.
1:34

Ultra Science: Outer Space Recycling

On TLC's "Ultra Science," learn how a giant space sling shot called the slingatron could be used to get us to Mars.
1:35

Ultra Science: The Slingatron

At NASA's Goddard Space Flight Center, scientists and engineers attempt to break the individual pieces of the space shuttle by replicating the environment of space and the stress of liftoff. See how they do it in this video.
4:08

What Breaks on Earth Will Break in Space

Watch this video about eating in space on HowStuffWorks. This segment contains the How it Works segment in which Astronaut Michael Foale describes what eating in space is like. Learn how eating in space works in this video from NASA Destination Tomorrow.
9:32

What is Eating in Space Like?

An Apollo astronaut talks about the last few crucial seconds before launch on Discovery Channel's "When We Left Earth."
1:31

When We Left Earth: Apollo Blast Off

On Discovery Channel's "When We Left Earth," meet the pioneer astronauts selected for the Mercury space mission.
2:47

When We Left Earth: Mercury Astronauts

On Discovery Channel's "When We Left Earth," meet Neil Armstrong, Buzz Aldrin and Michael Collins -- the crew of Apollo 11.
1:17

When We Left Earth: The Apollo 11 Crew

From the archives of Discovery: Clamped to the shuttle arm in zero gravity, this astronaut makes external repairs to the space station. Learn more about space in this video.
0:34

Working on the Shuttle's Exterior 5

The reduced gravity of space offers challenges and diversion for astronauts. Check out this video from the archives of Discovery to see astronauts in zero-gravity action.
0:31

Zero Gravity Activity

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