Have you ever wondered how astronauts get fresh, breathable air on the space station? Tune in to find out! Watch as NASA Astronaut Thomas Marshburn demonstrates how the Law of Conservation of Mass relates to living and working on the International Space Station. Take a tour of the station and discover how recycled water is converted to fresh, breathable oxygen through electrolysis for the astronauts living and working aboard the orbiting laboratory. Check out the Classroom Connection lesson plan to further explore chemical reactions and the Conservation of Mass.

Visit www.nasa.gov/stemonstrations for more videos like this, along with corresponding Classroom Connection lesson plans.


We’re launching STEM Engagement to new heights with learning resources that connect teachers, students, parents and caregivers to the inspiring work at NASA. Join us as we apply science, technology, engineering and mathematics to explore space, improve aeronautics, examine Earth and strive to land the first woman and first person of color on the Moon with the Artemis program.

NASA STEM resources: stem.nasa.gov
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