Astronaut Scott Kelly, the first American to spend a year in space, announced he will leave the US Space Agency (NASA) on April 1, after 20 years of career and four missions.
“This year in space was a huge challenge for everyone involved and gave me a unique perspective and time to reflect on what should be my next step in our continuing mission, “he said Friday through a NASA statement.
However, Kelly, just 52 years old, he will continue to participate in the studies of its one-year mission in space, including medical examinations and other tests.
the announcement of his retirement comes 10 days after his return to Earth with his Russian colleague Mikhail Kornienko, after 340 days on the International Space Station (ISS), to test human endurance and determine whether it would be safe to send people to Mars.
One year before departing the ISS, the two astronauts began participating in a series of investigations to better understand the response of the human body to the long space stays.
Then they took samples blood, urine and saliva tests that have been repeated them during their year in space and which continue to be submitted during the 12 months after their return.
With his last mission, Kelly made double record. astronaut is his country’s longest running (340 days) and total time (520 days) has been in space
astronaut entered NASA in 1966 and traveled four times to space.
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