Expedition 52 explored the aging process in space today and measured the lighting conditions on the International Space Station. The crew is also getting spacesuits ready for an upcoming Russian spacewalk.

Flight Engineer Peggy Whitson swapped out stem cell samples today inside the Microgravity Science Glovebox for the Cardiac Stem Cells study. The experiment is researching spaceflights effect on accelerated aging and may provide a treatment for heart disease on Earth. Scientists are observing the stem cells in space to determine their role in cardiac biology and effectiveness in tissue regeneration.

Whitson also set up light meters to measure the intensity and color of new LED (light-emitting diode) light bulbs installed in the station. The data is being collected for the Lighting Effects study to determine how the new lights affect crew sleep, circadian rhythms and cognitive performance.

NASA astronaut Jack Fischer checked out Russian Orlan spacesuits with Commander Fyodor Yurchikhin this morning. The spacesuit maintenance work is doing being done ahead of a Russian spacewalk planned for later this year.

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Aging and Heart Research Lead Station Science Today - Space Fellowship

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