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A daily newsletter charting the future: From technology to the scientific breakthroughs changing our lives.

NASA's Neutral Buoyancy Lab Is Like Zero Gravity on Earth

NASA's Neutral Buoyancy Lab is a massive pool with a full-size replica of the International Space Station inside. It's the closest an astronaut can get to training for zero gravity without leaving earth. NASA extravehicular specialist Art Thomason explains while NASA astronaut Jessica Meir goes for a swim.

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