If imagining the future of human civilization, you might think the conquest of space, colonies on other planets and regular space travel, perhaps you watched too many sci-Fi movies. The reality is that space is not the most favorable environment for Homo Sapiens. Recently, scientists have found another confirmation of this — according to the results of a new study, long-term stay in space poses a serious health risk and could endanger the lives of astronauts.
Despite the loud statements of the heads of private and public companies about the plans for the colonization of Mars and the regular space flight from one planet to another, the reality paints a completely different picture. Space is a very hostile environment for members of our species. Even a long stay orbiting the Earth has a serious impact on health. So widely known was brothers twin astronauts Scott and mark Kelly. They took part in an important experiment, in which Scott went for a year on the ISS, and his brother remained on Earth. When Scott returned home, even bacteria in his gut have become different, not to mention a series of occurred in the body of an astronaut changes.
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Cosmic radiation also poses a serious threat to health. So, the results of earlier studies, published in the journal eNeuro, showed that a long stay in space affects the brain. But that’s not all. In examining the potential effects of spaceflight on health, the researchers found that being in space can disrupt the bloodstream. The problem lies in the main blood vessel that runs down the neck from the brain, jugular. Researchers monitored the health status of the 11 astronauts who spent on the International space station (ISS) 50 days. The study revealed that six of them suffered problems with blood flow in the jugular. Moreover, one of the crew members was discovered thrombosis or occlusion of the internal jugular vein — a blood clot that interferes with normal circulation. The researchers note that this is the first case registered as a result of space flight. The paper was published in the journal JAMA Network Open.
As the team edition sciencealert.comit is necessary to conduct more research before talking about sending humans to Mars. Today the situation is such that the effects of long duration space flight can result in failure for the astronauts — they risk not only a violation of blood flow, but damage to the brain due to cosmic radiation. Needless to say that a long stay in weightlessness has no positive effects on the body. The impact of the weightless environment during space flight leads to the permanent displacement of blood and tissue fluid in the direction of the head compared to the vertical position on the Ground. What effects weightlessness will have on cerebral venous current is unknown. Movement of fluid in the direction of the head during prolonged weightlessness also leads to swelling of the face, decrease in the feet, and reduced plasma volume.
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It turns out that the time spent in space can reduce bone density, to change the composition of gut bacteria, disrupt the brain and cause thrombosis of the jugular vein. Despite the fact that researchers are seriously concerned with the results and intend to continue work, today members of Homo Sapiens obviously do not get outside of the satellite. Perhaps we should continue to send robotic devices to surf the cosmic expanse and observe the Universe from afar. Most likely we will never be able to leave their home planet, so that space exploration can provide to robots.