If you stay in space for a long time, your muscles and bones will weaken, mainly in your legs and lower back. Gravity always acts on you while you're on Earth, so even if you're not really aware of resisting gravity, you always use your lower body muscles. In space, astronauts are exposed to galactic cosmic radiation, solar radiation, solar cosmic particles, and geomagnetically bound radiation. Life in space has always fascinated Earthlings, and blockbuster movies like The Martian only serve to fan the flames of curiosity.
So what makes it so difficult to survive in space? To begin with, the human body has evolved to function under gravitational conditions. The biotechnology company Samsara Therapeutics, an early-stage drug discovery company, has expanded to another 1000 square feet of R%26D laboratory space in The Oxford. Technology is constantly evolving and the number of days an astronaut can maintain a healthy “lifestyle” in space is continuously increasing. The film Mission to Mars has a scene that realistically demonstrates what would happen if an astronaut's space suit lost pressure rapidly and were exposed to outer space.
Research has also shown that extended periods in space can disrupt the immune system and leave astronauts vulnerable to pathogens, hypersensitivity and unwanted autoimmune responses. However, each crew that resides on the International Space Station provides us with information that we use to adjust our protocols and that extends that period of time. As for the total number of days in space, his Russian compatriot Sergei Krikalev takes the cake, with more than 803 days in space, spread over six flights. While Matt Damon did a great job of earning a living on Mars, it left viewers wondering how long humans can survive in space.
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