Monday, a an astronaut capsule that looks like a giant orange juicer scatter in the Atlantic Ocean, bringing its four-man crew back to Earth. These astronauts have been for six months on International Space Station, and so the gravitational pull that now draws on their bodies will feel familiar to them, but strange.
This group, called SpaceX Crew-2, has spent the last half and a half years working on astronomy, such as experimentation.tissue chips, ”Small parallels to the human organs. But they also left hours like exercise rats: Six days a week, they have a workout of 2.5 hours to reduce the amount of damage that the air can do to the body. Space, as he says, it’s hard. But it is very difficult for people. And radiation, lack of gravity, and living in confinement can lead to problems.
“NASA has been concerned about the effects of space flight on the human body, since the first space shuttle,” says Michael Stenger, an astronomer. Anti-Public Health, the hand of the organization dedicated to understanding how air travel affects the body and minimizing its effects. One major problem is that sitting on orbit is the same as sleeping, even if you are trying to try all day. He said: “Living in space is like sitting idle.
When you do not withstand gravity, the muscles and bones lose their strength, for parts of the body adhere to the philosophy of “use or lose”. Muscles shrink fainting, just as he would do if an astronaut was lying on a bed playing Dana all day long. Bones can lose a lot of energy: They all form and break down based on the energy they experience on a daily basis, from the force of gravity and the use of muscle. After six months in the air, the female bone of the leg is able to lower 10 percent of its quantity, which requires years of recovery to return to the ground.
The area is also stable for the cardiovascular system, says Stenger: “Your heart no longer needs to pump harder to maintain its blood pressure, so your heart is failing.” In the year of astronaut Scott Kelly in space, his heart slowed in size more than a quarter, adapting to adapt to its new environment. When you return to the pressure of gravity, the heart can pump itself to make it appear normal, seemingly indestructible for a long time.
Scientists are not doing enough to understand why, but the backs of astronauts also grow taller in space, and stand several inches high. Travelers return to their normal size on Earth, but after their flight, the astronauts are at greater risk of disc herniation, which may be related to spinal cord injury. Also, their suits and accessories should be tailored to their dimensions – and if the dimensions change, the design becomes more complex, especially over long distances.
In an effort to make astronomers more fit for their role in space and health when they return to Earth, the Human Health Countermeasures has tried to rectify these physical defects – among other things with aerobic exercise equipment. The Advanced Resistive Exercise Device is a type of Bowflex based: It uses vacuum cylinders to generate several hundred pounds, and Microgravity runners can recycle it to make burners, squats, or bench presses for up to two hours, plus time. it takes a while to repair the device and recover a bit. The ISS is also made up of treadmill and bicycle controls, which astronauts spend 30 minutes of intermediate training.
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