IF you get homesick during a weekend away, chances are you would not be suited for the expedition Scott Kelly is about to begin.
The mission aims to test the physical and psychological strains space exploration places on the human body.
Mr Kelly said he understands the full extent of a prolonged stay in space is still unknown, but want’s to partake in the mission regardless.
“There are risks and I am willing to accept that for what we are going to learn from it,” Kelly told the ABC.
“That’s one of the things that makes it exciting and something I am really happy to be a part of.”
To help measure the changes occurring to Scott’s body during the mission, his twin brother, Mark, also an astronaut, will remain on earth.
With a roundtrip to Mars taking 18 months, NASA is hopeful this expedition will help determine if such a journey is logistically possible.
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