Joseph M. Acaba
@astroacaba
NASA astronaut on my 3rd spaceflight. US Marine Corps, Reserve -hydro geologist -peace corps volunteer -and my favorite job, math and science teacher.
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15-07-2011 21:33:33
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It is extremely helpful! A big part of the International Space Station is helping to design life support systems that we will use going to Mars, and learning how the human body reacts to a microgravity environment. x.com/Astro_ManishKr…