NASA astronaut Scott Kelly yesterday set a new record for the longest single stretch of time spent in space by an American, with 216 consecutive days at the International Space Station (ISS).
Kelly is more than midway through an entire year at the ISS, as part of an experiment to study the effects of long-term spaceflight on the body and mind.
Russian cosmonaut Mikhail Kornienko is also spending a year at the orbiting outpost for the study.
Photo: AFP
Kelly’s twin brother, Mark, is taking part on Earth to help scientists compare any genetic changes they see in Scott while in space.
Astronauts typically spend no longer than five to six months at a time in space.
“Breaking such a record for time in space is important because every additional day helps us better understand how long-duration spaceflight affects bodies and minds, which is critical to advancing NASA’s journey to Mars,” the US space agency said in a statement.
NASA hopes to send people to the Red Planet by the 2030s. However, it remains unknown if explorers could survive the long-term journey, which might last three years.
Concerns for the health of pioneers in deep space include exposure to potentially cancer-causing levels of radiation, and the psychological difficulties of living in an enclosed space with no access to nature, family or friends.
The record for the longest single spaceflight was previously held by US astronaut Michael Lopez-Alegria, who spent 215 days in space as commander of the ISS in 2006.
Since Scott Kelly has already flown in space several times before, he broke another record earlier this month for the most cumulative days spent in space by an American.
On Oct. 16, Scott Kelly marked his 383rd day living in space, surpassing US astronaut Mike Fincke’s record of 382 cumulative days.
However, Scott Kelly is a long way from the record of the longest time spent in space by a human.
That honor goes to Russian Gennady Padalka, who set a 10-year-old record for the number of cumulative days in space on June 28 when he reached 804 days.
Padalka flew to space with Kornienko and Scott Kelly in March, and returned to Earth after six months.
“When he returned to Earth [on] September 11, Padalka had spent 879 days living and working in space,” NASA said.
Scott Kelly is scheduled to return to Earth on March 3 next year, by which time he will have logged 522 total days living in space during four missions.
The ISS is about to mark its 15th year of continuous human presence in low-Earth orbit. The research outpost has been staffed by a rotating cast of more than 200 people over the years.
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