Back To Earth, Then To Rehab - The Toll Of 9 Months In Space
After finally touching down on Earth last week, NASA astronauts Sunita Williams and Barry "Butch" Wilmore are now beginning a 45-day rehabilitation program. But what exactly calls for such an extensive recovery?
The answer lies in the unexpected turn their mission took. Originally scheduled as an eight-day trip to the International Space Station (ISS), their stay stretched into nine long months due to a series of technical failures. Launched in June of last year aboard Boeing’s Starliner spacecraft, the mission quickly ran into trouble. Issues ranging from fuel and helium leaks to a malfunctioning propellant valve made their scheduled return impossible.
As the months passed, NASA remained firm in its commitment to bringing the astronauts home safely, repeatedly announcing new plans for a retrieval mission. Yet each proposed launch faced delays or was eventually canceled, leaving Williams and Wilmore effectively stranded aboard the ISS.
Their situation gained renewed attention after former U.S. President Donald Trump reportedly urged NASA to seek outside help. Eventually, a collaboration with Elon Musk’s SpaceX provided the solution. A rescue mission was successfully executed, finally bringing the astronauts back to Earth.
Now, after spending over 270 days in microgravity, both astronauts must readjust to life on Earth. Extended periods in space can take a toll on the human body, affecting everything from muscle strength and bone density to balance and coordination. The 45-day rehab program is designed to help them gradually regain physical function and adapt once again to Earth’s gravity.
Sunita Williams and Barry Wilmore's return to Earth
Finally, on Wednesday, March 19, SpaceX’s Crew-9 mission, led by NASA astronaut Nick Hague and Russian cosmonaut Aleksandr Gorbunov, successfully brought Sunita Williams and Barry “Butch” Wilmore back to Earth. The pair splashed down just off the coast of Florida before being carefully reunited with friends and family while lying on stretchers.
But why exactly do Williams and Wilmore now face an extended stay at a rehabilitation facility?
The answer lies in the toll that nine unexpected months in space can take on the human body. Not only were they stranded aboard the ISS far beyond their intended mission length, they also endured months of uncertainty and delayed rescue efforts.
Physically, the effects of long-term microgravity are significant. According to DD News, “a shift in fluid causing their faces to puff, the microgravity in space would have also triggered muscle atrophy, a temporary height increase, a reduced bone density, blood flow problems, and a change in neurovestibular function.”
That is just the beginning. Prolonged time in orbit can also lead to decreased aerobic capacity, along with reduced muscle strength, endurance, coordination, and overall stamina. Even balance becomes a challenge when astronauts return to Earth’s gravity after months of floating in weightlessness.
The upcoming rehabilitation program is designed to help the astronauts slowly rebuild strength and stability. It allows their bodies to readapt to life on solid ground after nearly a year away from it.
Williams and Wilmore are now officially in recovery mode.
Keegan Barber/NASA via Getty ImagesExperts have also raised concerns that extended time in space may lead to increased exposure to radiation, which elevates the risk of developing certain cancers. There are also growing worries about its impact on mental health over the long term.
According to The Indian Express, astronauts may also experience vision impairments and disruptions to gut health, both of which are associated with prolonged space missions.
To help counter these effects, Williams and Wilmore will take part in a structured reconditioning program led by Astronaut Strength, Conditioning, and Rehabilitation (ASCR) specialists. The goal is to help them safely readjust to Earth's gravity, which can feel overwhelmingly intense after months in microgravity.
So what does the rehabilitation process involve?
According to U.S. reports, the astronauts will undergo two hours of daily treatment, seven days a week, over the course of 45 days. Each program has been tailored to the individual based on a detailed set of medical evaluations.
The rehab journey is broken into three key phases. The first began on landing day and focuses on restoring basic mobility, improving flexibility, and rebuilding muscle strength.
In the second phase, the astronauts will take on proprioceptive training to improve body awareness, along with cardiovascular exercises to strengthen endurance.
The final phase is dedicated to functional development. This includes more advanced movements and physical tasks designed to prepare the astronauts for a full return to daily life on Earth.
Williams and Wilmore are now officially in recovery mode.
