lundi 23 octobre 2017

Culmination of Spacewalks Leads into Studies on Crew Health and Performance












ISS - Expedition 53 Mission patch.

October 23, 2017

International Space Station (ISS). Animation Credit: NASA

After a trio of spacewalks this month, including the final one conducted last Friday by Commander Randy Bresnik and Flight Engineer Joe Acaba of NASA, the Expedition 53 crew returned to a schedule of full-time science this week.

Today, the crew explored how lighting aboard the International Space Station affects their performance and health. One such investigation is called Lighting Effects, which studies the impact of the change from fluorescent light bulbs to LEDs. By adjusting intensity and color, investigators on the ground will use crew feedback to determine if new lights can improve crew circadian rhythms, sleep and cognitive performance.


Image above: A spectacular aurora borealis, or “northern lights,” over Canada is sighted from the International Space Station near the highest point of its orbital path. Image Credit: NASA.

Blood and urine samples were also collected and stowed in the Minus Eighty Degree Celsius Laboratory Freezer for ISS, or MELFI, marking Flight Day 30 for the Biochemical Profile and Repository experiments. Specific proteins and chemicals in the samples are used as biomarkers, or indicators of health. Armed with a database of test results, scientists can learn more about how spaceflight changes the human body and protect future astronauts on a journey to Mars based on their findings.

Expedition 53 is also preparing a microsatellite carrying an optical imaging system payload for deployment. Its operation in low-Earth orbit will attempt to solidify the concept that these small satellites are viable investigative platforms that can support critical operations and host advanced payloads.

Related links:

Lighting Effects: https://www.nasa.gov/mission_pages/station/research/experiments/2279.html

Biochemical Profile: https://www.nasa.gov/mission_pages/station/research/experiments/1008.html

Repository: https://www.nasa.gov/mission_pages/station/research/experiments/981.html

Microsatellite carrying an optical imaging system payload: https://www.nasa.gov/mission_pages/station/research/experiments/2163.html

Expedition 53: https://www.nasa.gov/mission_pages/station/expeditions/expedition53/index.html

Space Station Research and Technology: https://www.nasa.gov/mission_pages/station/research/index.html

International Space Station (ISS): https://www.nasa.gov/mission_pages/station/main/index.html

Animation (mentioned), Image (mentioned), Text, Credits: NASA/Catherine Williams.

Best regards, Orbiter.ch

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