The NASA astronauts that have returned to earth are expected to feel “disoriented” and “dizzy”. What happens to human bodies after being in space.

When the NASA astronauts listened to Suni Williams and Butch Wilmore at the international space station in June, they thought they would be there for eight days. Instead, 286 days later, they finally started their trip with two other astronauts on board a SpaceX capsule back to earth early Tuesday morning.

The group, which includes NASA Astronaut Nick Hague and the Russian cosmonaut Aleksandr Gorbunov, sprayed off the coast of Florida shortly before 6 p.m.

The rescue teams came at 6:30 p.m. ET and were withdrawn from the capsule on medical stock exchanges – not because of something that could have happened during their mission on board the international space station, but because this is the protocol for all astronauts that return to earth.

Studies have shown that the long time in space can cause significant changes to the human body. However, NASA does not expect the astronauts to have had serious long -term health effects for nine months, which have not had a particularly long stay in space for nine months.

What happens to the body of an astronaut in space?

For decades, NASA analyzes NASA programs for human seasons research what happens to the body of the astronauts in space.

The biggest challenge for astronauts is how the liquids float up in a human body without gravity, which causes the faces to swell, make sinuses and legs weaker.

Without gravity, astronauts are striking, symptoms similar to osteoporosis, an illness that weakens the bones. Since there is no gravity, the bones and muscles of the astronauts work while moving.

The NASA reported that bones without gravity lose average 1% to 1.5% of the mineral density per month in space, which can increase the likelihood that the astronaut suffers from loss of muscle mass or breaks its limbs. This can also lead to great headaches and back pain, since astronauts are probably 2 to 3 inches larger in space (even though they return to the earth months after returning to earth).

However, astronauts have learned that the inclusion of regular training has contributed to protecting their bone masses from decreasing protection. If astronauts do not train regularly or follow a certain diet, they lose muscle faster than on earth, which is why astronauts on board the ISS have strictly daily fitness routines.

The lack of gravity can also flatten the shape of the eyeballs and cause visual problems. Any negative effects on the eyes can cause changes in the retina and influence blood circulation, which could change, how well astronauts can see.

NASA previously said that Williams was in good health

In November, NASA gave up an explanation of Williams Health after rumors in circulation that they had lost a considerable amount of weight after photos of her were released on the spaceship. Dr. James Polk, the top medical officer of NASA, said that Williams was healthy and did not suffer from medical problems.

In a video interview with the New England Sports Network in the same month, Williams claimed that she was the same weight as before the trip, but found that the shape of her body – like thinner legs and a swollen head – seemed to have changed to public due to the lack of severity. She said she did some exercises for weighting to build leg muscles.

What happens to the body of an astronaut when you return to earth?

Immediately after landing, the vestibular system – which the organ is inner ear that maintains the balance – is immediately confused by the gravity of gravity, which makes it difficult for astronauts to walk. Astronauts will also experience “baby feet” in which the soles of their feet did not run around after months so that it can be painful for them to go back on earth.

Matthew Dominick, commander of the SpaceX crew 8 mission in March 2024, said that recovery could take weeks or months.

Dominick said reporters in November that there were great relaxation that expect astronauts, such as being “confused, dizzy”, but some surprising and “little things like just on a hard chair” were difficult enough that he had preferred to put it on a towel instead during family meals.

The most detailed study of permanent changes was carried out at the NASA astronaut Scott Kelly, who spent 340 days in a space station from 2015 and, after returning to earth, agreed to study his health. His health analysis was then compared to his identical twin brother Mark Kelly, a Senator of Arizona and a colleague who had remained on Earth. The NASA researchers found that Scotts DNA was mutated in some of his cells, reacted his immune system in a new way and his microbiome won a new bacterial species.

It’s not just physical complaints

Frank Rubio, an American astronaut who held the US stay in space with 371 days, said reporters when he returned to Earth in September 2023 that a difficult health-related side effect, so that it was the psychological aspect in space.

The Baylor College of Medicine found that astronauts probably experience a disorientation and loss of a sense of direction in space missions, which can have a negative impact on the completion of the most fundamental tasks. Factors such as with other people, the high work requirements and the loss of a regular 24-hour lighting cycle of 24 hours with other people are enclosed, astronauts can cause a lot of stress in space.

Sleep is also an important topic. Astronauts have to free themselves on a wall without gravity to rest in a bed, and the surroundings are never completely quiet or dark, a fact that was held responsible for the disappearance of the circadian rhythms of the astronauts.

How do Williams and Wilmore feel?

NASA expects the couple to be physically good when they land on Earth. And although they were removed from the SpaceX capsule of stock exchanges and go through immediate health reviews, everything is carried out as a precaution.

The astronauts themselves seem confident that they will feel fine as soon as they land.

“Training in the past nine months,” wrote Williams in an e -mail to Live Science. “We feel strong and ready to tackle the gravity of the earth.”