Another negative facing at least some astronauts on long space missions may be blurry vision, a new study finds. The vision can blur in space and persist, perhaps for months, after returning to Earth.
Scientists think the problem is due to changing blood flow patterns in microgravity.
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Deploying space stations and interplanetary vehicles that spin to produce artificial gravity would appear to be the obvious solution.
But we still need to know how dangerous or harmless hypogravity environments are on surfaces such as the Moon and Mars.
Our space program is still too focused on using manned space travel as publicity stunts for public consumption instead of as a means to find out how well the human body can adapt to the extraterrestrial environments and what we need to do in order to make that happen!
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