As astronaut Sunita Williams prepares to return from her extended mission aboard the International Space Station (ISS), she faces the daunting challenge of readjusting to Earth’s gravity.
Williams, who has spent over eight months in microgravity, will experience significant physical changes upon her return, as gravity begins to “punish” her body after months of living in weightlessness.
Butch Wilmore, a fellow astronaut, stuck in space with Williams revealed how gravity will be the biggest challenge when the two astronauts return home.
“Gravity is really tough, and that’s what we feel when we get back,” he explained. “Gravity starts pulling everything to lower extremities; fluids will be pulled down, and even lifting a pencil will feel like a workout,” Willmore said in an interview on CNN.
This sudden shift will lead to discomfort and a feeling of heaviness as the body readjusts to gravitational forces.
Williams echoed these sentiments, acknowledging that adapting to life on land will be challenging.
“It’s gonna be a little bit hard to adapt,” she said. “It’s a day-for-day process when you get your fast-twitch muscle action back.” The astronauts are aware that within 24 hours of returning, they will begin to lose the unique sensations of weightlessness that they have come to enjoy during their time in space.
Extended stays in microgravity lead to various physiological changes, including muscle atrophy and bone density loss. Astronauts can lose up to 1% of their bone mass per month due to the lack of weight-bearing activities.
As Williams prepares for her return, she is likely to undergo a rigorous rehabilitation program aimed at regaining strength and bone density.
Additionally, fluids in the body redistribute in space, causing what astronauts describe as “puffy faces” and thinner limbs. Upon returning to Earth, these fluids will shift back to their normal distribution, potentially leading to temporary discomfort as the body readjusts.
Despite these challenges, both Williams and Wilmore remain optimistic about their return. They have previously adapted quickly after extended missions and hope for a similar experience this time. “Floating in space is a lot of fun; I like my crazy hair,” Wilmore remarked, reflecting on the joys of life aboard the ISS. The two astronauts will board SpaceX‘s Dragon spacecraft and undock for ride home on March 19.
Sunita Williams braces for life on Earth: Even lifting a pencil will be a workout
