During Expedition 40 of the ISS last summer, NASA and ESA astronauts grew a water bubble in space to explore the phenomenon of water surface tension in microgravity. (NASA's Marshall Center/YouTube)
During Expedition 40 of the ISS last summer, NASA and ESA astronauts grew a water bubble in space to explore the phenomenon of water surface tension in microgravity. (NASA's Marshall Center/YouTube)
During Expedition 40 of the ISS last summer, NASA and ESA astronauts grew a water bubble in space to explore the phenomenon of water surface tension in microgravity. (NASA's Marshall Center/YouTube)
During Expedition 40 of the ISS last summer, NASA and ESA astronauts grew a water bubble in space to explore the phenomenon of water surface tension in microgravity. (NASA's Marshall Center/YouTube)
During Expedition 40 of the ISS last summer, NASA and ESA astronauts grew a water bubble in space to explore the phenomenon of water surface tension in microgravity. (NASA's Marshall Center/YouTube)
During Expedition 40 of the ISS last summer, NASA and ESA astronauts grew a water bubble in space to explore the phenomenon of water surface tension in microgravity. (NASA's Marshall Center/YouTube)
During Expedition 40 of the ISS last summer, NASA and ESA astronauts grew a water bubble in space to explore the phenomenon of water surface tension in microgravity. (NASA's Marshall Center/YouTube)