EXPEDITION 74 ASTRONAUTS TO CONDUCT SPACE WALK TODAY
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“EXPEDITION74 ASTRONAUTS TO CONDUCT SPACE WALK TODAY”
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This storyHow long does a typical ISS spacewalk last?
- About 2 hours
- About 4 hours
- About 6.5 hours
- About 10 hours
Guess, then reveal the answer
About 6.5 hours
This storyWhat should we call ALL space travelers going forward?
This storyWhat's the biggest challenge of an Expedition 74 spacewalk?
This storyWhat does 'cosmonaut' literally mean in Russian?
- Sailor of the universe
- Traveler of stars
- Sky navigator
- Space pioneer
Guess, then reveal the answer
Sailor of the universe
A single NASA spacesuit costs roughly $150 million to build!
NASA's Extravehicular Mobility Unit (EMU) suits, used on ISS spacewalks, were designed in the 1970s-80s. The ISS has seen 270+ spacewalks since 1998, totaling over 1,700 hours outside the station.
ISS spacewalks require hours of oxygen pre-breathing to stay safe
Before any EVA, astronauts breathe pure oxygen up to 4 hours to purge nitrogen and avoid decompression sickness — like a diver's 'the bends.' Learn more at NASA.gov