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Image above: Red leaf lettuce plants were also harvested from a plant growth chamber grown under red and blue LED lights. What kind of food will astronauts eat and what is the best way to grow it during deep space exploration missions? Gioia Massa, a NASA Postdoctoral Fellow in the Surface Systems group of Kennedya€™s Engineering Directorate who works on this AES habitation-related project, said they looked at the responses of a red leaf lettuce called a€?Outredgeousa€? and radish plants to different light sourcesa€”broad spectrum fluorescent lighting and solid state red and blue LED lighting. Some of the first NASA-funded tests were done at the University of Wisconsin and at Kennedy using wheat and just red LEDs.
During a recent harvest of the plants, Mickens measured the plantsa€™ shoot length, the shoot diameter, total fresh mass or the weight of the plants at time of harvest, total dry mass of the edible plant matter accumulated during the growth cycle, and the leaf area index. For the test, he compared the growth responses of the lettuce and radishes grown under a treatment of red and blue LEDs, and a treatment of broad spectrum white fluorescent lamps with green light present.
According to Mickens, results showed darker red color under the red and blue LEDs, which indicates a higher concentration of anthocyanin, a powerful antioxidant that can combat some of the effects of cosmic radiation.


There is evidence that supports fresh foods, such as tomatoes, blueberries and red lettuce are a good source of antioxidants, according to Wheeler. Matthew Mickens, a plant biologist from North Carolina Agriculture and Technical State University, measures Cherry Bomb Hybrid II radish plants harvested from a plant growth chamber Aug. The plant experiment at Kennedy is part of the Advanced Exploration Systems, or AES, program in NASAa€™s Human Exploration and Operations Mission Directorate. A group of plant biologists is seeking the answers as it works on one of NASAa€™s Advanced Exploration Systems (AES) Habitation Projects at Kennedy Space Centera€™s Space Life Sciences Laboratory, one in a series of projects taking place at the agency to forge new approaches to rapidly develop prototype systems, demonstrate key capabilities and validate operational concepts for future human missions beyond Earth orbit.
Ray Wheeler, lead for advanced life support activities in the Engineering Directorate, using LED lights to grow plants was an idea that originated with NASA as far back as the late 1980s.
Matthew Mickens, a graduate of North Carolina Agricultural and Technical State University and recipient of the NASA-sponsored Harriett G.
Then Mickens flash-froze some of the plants in liquid nitrogen and ground them to a powder in order to perform a new test, an adenosine triphosphate analysis, which measures stored energy in the plant tissue.


Additional replications of the crop cycles are currently ongoing to further confirm these observations. This plant experiment studies the effects of different types of lighting on plants such as radishes and leaf lettuce.
Jenkins Predoctoral Fellowship, followed the plantsa€™ growth during his tenure at the center. The plant experiment at Kennedy is part of the Advanced Exploration Systems program in NASAa€™s Human Exploration and Operations Mission Directorate.



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Comments

  1. VETERAN, 22.06.2016
    Kick over the bales, and.
  2. Rambo666, 22.06.2016
    Should be harvested as quickly as they and is optimistic concerning the.