How does the human body survive a year in orbit?
In short: While most astronauts spend only four to six months on the International Space Station, NASA is testing human endurance through a groundbreaking yearlong mission. This historic journey aims to prepare for future voyages to Mars, which could last over 500 days, by studying how the body adapts to long-duration spaceflight.
On September 15, 2015, NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko reached the midpoint of a historic yearlong mission aboard the International Space Station. This mission represents a significant departure from the norm, as the average expedition on the station typically lasts only four to six months. This milestone was celebrated during an event hosted by the National Press Club in Washington. During the discussion, Kelly participated live from the station while his twin brother, Mark, attended in person.
This prolonged mission aims to perform biomedical studies investigating human physiological responses and adaptations during lengthy space travel. Understanding these physiological shifts is critical for NASA's future ambitions, specifically for human missions to Mars. Such journeys could potentially last 500 days or longer, requiring astronauts to withstand much longer periods of isolation and microgravity than previously required. The mission's data is vital because deep-space voyages to Mars could exceed 500 days in duration. These extended periods of microgravity present unique challenges for human health.
The insights gained from Kelly and Kornienko's mission extend beyond deep-space exploration. The research may offer terrestrial benefits, such as improving recovery protocols for patients following prolonged bed rest or enhancing monitoring for individuals whose bodies struggle to fight infections. By using the International Space Station as a laboratory, scientists aim to unlock breakthroughs that are simply impossible to achieve on Earth. The station serves as a hub for science and innovation, having been continuously occupied since November 2000. It has hosted over 200 visitors and various international spacecraft to date.
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Sources
- Summary by Intellect · source: Halfway point of the one year mission on This Week @NASA – September 18, 2015
- Also: NASA Astronauts, Events Mark Halfway Point of One-Year Space Station Mission - NASA
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