00:00NASA, the US space agency, said that astronauts Sunita Williams and Butch Willmore, who have
00:16been stuck at the International Space Station for more than nine months, will return to
00:23Earth on Tuesday, March 18, at 3.27 a.m. on March 19, according to the time in India.
00:27Both astronauts will be happy to return to Earth, but it may take months for them to
00:34return to normal after spending more than nine months in space.
00:39So what changes are there in their bodies, how difficult will they have to face on Earth,
00:45let's find out in this video.
00:47Sunita Williams and Butch Willmore went to the International Space Station on an eight-day
00:54mission from New York to Los Angeles on Tuesday, March 18, according to the time in India.
00:59But due to technical problems on the plane, they are still stuck there.
01:03Both have been stuck in space for more than nine months, and experts say that by spending
01:08so much time in space, you can see big changes in the bodies of both astronauts.
01:13The biggest change can be seen in their muscles and bones, because they both become weak.
01:20A NASA astronaut said that both astronauts are going to have trouble walking on Earth
01:26because by staying in space for a long time, astronauts have a problem with their baby
01:31feet.
01:32They say that because of the lack of air and gravity, astronauts feel weightlessness in
01:37space and the thick skin on the top of their feet is lost.
01:43This makes their feet very weak like small children and they have trouble walking.
01:49In addition to baby feet, astronauts also have to face bone density loss.
01:54Due to bone density loss in the absence of gravity, their bones become weak.
02:00NASA says that every month spent in space reduces bone density by 1%, which increases
02:06the risk of bones breaking.
02:10In addition to this, the muscles of the feet and back also become weak due to the absence
02:14of physical activities.
02:16To stop this, although astronauts exercise regularly for two and a half hours at the
02:21space station, they regularly do squats, deadlift and bench pressing.
02:26A special space station has also been built for this.
02:29Along with exercise, astronauts also run on the treadmill regularly and when they use
02:34exercise bikes, they also take supplements for bone strength.
02:39In addition to this, if they know what other effects they have on their body, then the
02:43fluid of the body goes up instead of down without gravity.
02:47This causes swelling in their face, increases pressure in the head and also affects the
02:52light of the eyes.
02:54In addition to this, staying in space also affects their cardiovascular system, i.e.
02:58heart system.
03:00The heart shrinks slightly and the expected blood pumps slowly.
03:04This causes the risk of heart-related problems by returning to Earth.
03:08Staying in space for 9 months, apart from the whole world, with just a few astronauts
03:13also affects the mental health of astronauts.
03:16After going into space, there are also changes in our brains, which can cause problems to
03:21astronauts after returning to Earth.
03:25A recent study has found that staying in space for a long time also changes the structure
03:30of the brain, i.e. the structure of the brain.
03:33Some parts of the brain may swell, which can take up to 3 years to normalize.
03:38In space, there is no protective shield of the earth, due to which astronauts come in
03:43contact with radiation in large quantities.
03:46This increases the risk of cancer in them and also increases the possibility of DNA damage.
03:51In addition to this, spending a long time in space also affects the immune system and
03:56increases the risk of infection in astronauts.
03:59In many studies, it has been said that due to the lack of gravity, our immune cells
04:04become weak and the risk of diseases increases.
04:07There are also metabolic changes in the body, which reduces the capacity to store nutrients
04:12and energy in the body.
04:14Some astronauts are also seen to be overweight and their hunger also affects.
04:20In this case, according to NASA, astronauts are recovered in three phases.
04:25Immediately after landing on Earth, both astronauts will be taken out on a stretcher.
04:30First of all, their blood pressure, heart rate and neurological tests will be done.
04:35Fluid shift of the body, i.e. the movement of blood and fluid, medicine will be given to
04:40balance it.
04:41So what will happen as soon as you return?
04:43So the first task for both astronauts will be to learn to walk again.
04:47First of all, to strengthen the legs, light stretching and physiotherapy will begin.
04:52After that, for a few days, they will not be able to stand without any support.
04:56Gradually, they will be made to walk with the help of machines.
05:00After that, after 2-3 weeks, the mass ratio will be strengthened again.
05:04In this phase, the main focus will be on flexibility and cardio rehab.
05:09After that, exercises to recognize and control the movement of the body will be done.
05:14Weightlifting and muscle training so that the shrunken mass ratio can be developed again.
05:19In addition to this, there will be training of the heart and lungs.
05:22After returning from space, it is necessary to strengthen the cardiovascular system again.
05:26After that, returning to normal life will be their phase 3, which will take 5-6 weeks.
05:31Now the last phase is to bring the full recovery and body back to its previous state.
05:35According to doctors, staying in space has a bad effect on the strength of the bones.
05:39And to fix it, osteogenic loading exercises will be done.
05:43In this exercise, 4 times more weight will be put on the bones to make them strong.
05:47Doctors will also pay attention to both their mental health.
05:50As you know, staying in space for a long time increases mental stress.
05:54So how long will it take for both of them to recover?
05:57According to NASA research, after 45 days of training, most astronauts can regain normal fitness again.
06:04But it can take years for the bones to fully recover.
06:07And many times it does not happen as before.
06:10Radiation increases the risk of cancer.
06:12For this, long-term screening will be necessary.
06:15Mental stress and depression can take months or years to recover.
06:19So when they come back, the world will not be the same as before for them.
06:25Because a lot of changes will come in the body.
06:28The condition will become like a weak old man.
06:31It will take weeks to become strong again.
06:34That's all in this video.
06:36How did you find this information?
06:37Do tell by commenting.
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