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Airlock
 

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      an airtight room with two entrances that allows an astronaut to go on a
      spacewalk without letting the air out of the spacecraft
 


Sentences:
Astronauts get dressed for their spacewalks in an airlock on the space station.

Houses in cold places have an airlock so that cold air doesn't get into the house.

 


Related Links:
The Quest Airlock
What Is a Spacewalk?

 

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An astronaut can be seen in the open airlock of the International Space Station as he gets ready to close the hatch
Astronaut James Reilly goes back into the Quest airlock hatch after finishing a spacewalk.
Image Credit: 
NASA
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Page Last Updated: October 3rd, 2014
Page Editor: Sandra May