New Delhi :
US astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko returned back on earth after spending a year in space. Kelly touched down in Kazakhstan at 11:26 p.m. Eastern time, having completed 340 days in space.
This space mission happens to be is twice the length of a normal stay. With this mission Kelly has broken some of the previous records. He becomes the first American to have spent these many days in space aboard International Space Station.
Though this space mission was not about making or breaking records, it was a mission undertaken to study the effects of long-duration spaceflight on human body.
The space bound Kelly wasnâ€™t only spending time eating veggies and taking selfies in space but also collecting blood, urine, saliva, and poopâ€”for science! And at the same time, NASA has been taking samples from his identical twin to compare the situations and get a better handle on what happens to the human bodies in space.
The idea behind the twin study remains to help minimise extraneous factors as scientists research how genetically identical individuals respond to different conditions over a year.
Before his landing, â€œKelly during a live link-up told â€œPhysically I feel pretty good... but the hardest part is being isolated in the physical sense from people on the ground who are important to you. There's a loss of connection.â€
From Kazakhstan, reportedly Kelly will be flown to Houston in the US, where researchers at NASA will begin a series of scientific checks.
The comparisons drawn from their tests would help them to deepen their understanding of the physical and psychological shifts that take place during the long stays in orbit. NASA says the research should inform its stated aim of one day sending humans to Mars.
On Monday, Kelly handed over command of the space station to his American colleague Timothy Kopra, who remains on the orbiting outpost with Tim Peake and the Russian Yuri Malenchenko.