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Netflix ‘Away’ Space Blindness – Is It Real?



Space blindness – the loss of vision in zero gravity (or zero gravity) environments – isn’t just a dramatic plot point for Netflix’s Mars Odyssey. path;; Space blindness (or rather “impairment”) is an actual documented phenomenon that astronauts experience.

In fact, nearly two-thirds of astronauts report problems with their eyesight after months on the International Space Station. One astronaut reported that his impairment worsened so much that he could not read the words on a landing checklist.

Between 2015 and 2016, the American astronaut Scott Kelly spent a year on the International Space Station. (His experience serves as the basis for Netflix path.) That year, parts of Kelly̵

7;s retina actually thickened. He also had a swelling of the blood supply to the fundus. (Kelly’s powerful vision was one of the reasons he was first chosen as an astronaut.)

Former chief scientist of NASA’s human research program, Mark Shelhamer, stated in an interview with Air and space that for some the impairment has even subsided after this Returning from space and usually requires an astronaut to be there for about six months. Stays in space longer than six months (and more than a year for a hypothetical trip to Mars) have many unknowns when it comes to visual impairment. Some research already suggests that astronauts may need artificial gravity to prevent vision problems.

In Space Jan. 21 In this flyer photo provided by NASA, one-year-old mission crew members Scott Kelly of NASA Left and Mikhail Kornienko of Roscosmos Right celebrated their 300th consecutive day in space on Jan. 21, 2016.  The couple will spend a total of 340 days aboard the International Space Station during which scientists attempt to understand what happens to the human body while in microgravity for extremely long periods of time.  Photo from NASA via getty images

Scott Kelly and Mikhail Kornienko during their one year mission in space.

NASAGetty Images

Misha’s order to stay in his crew cabins to restore his eyesight, therefore, may not be an unlikely order on an extended space flight.

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What causes space blindness?

Reasons for visual impairment are not known for certain, although researchers have several theories. One theory is that the extra fluid in the skull can put pressure on the back of the eye because the weightlessness causes fluids to rise up in the body (think of the bloated faces of astronauts in space).

While testing the theory, the researchers found that oxidative stress, caused by microgravity (or weak gravity), may damage the blood vessels in the eye. If they can find a way to counteract oxidative stress, they may be able to protect the astronauts’ view.

path

DIYAH PERA / NETFLIX

In the universe of Netflix pathIt doesn’t appear that the problem has ever been resolved. Instead, the countermeasure was simply artificial gravity. However, since eyesight can take months to return, locking a visually impaired astronaut in his room doesn’t seem like the best strategy for a three-year mission to Mars.

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