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Very strange things happen to your body if you spend a year in space

You’ll get taller, but your vision might suffer.

NASA ASTRONAUT SCOTT Kelly returned to earth last week after almost a year in space.

download Scott Kelly Source: Nasa

His 340 days aboard the International Space Station (ISS) haven’t been all fun and games.

Our bodies evolved on Earth, so they’re not built for weightlessness — which is exactly why Nasa plans to use Kelly to study the long-term effects of spaceflight the human body.

Scott’s identical twin brother Mark Kelly has spent the past year on Earth, so Nasa will compare Mark’s changes to those that Scott experienced.

Nasa’s ultimate goal is to use the lessons learned from Kelly’s space mission to send astronauts to Mars — and soon. That journey will take about 2.5 years round-trip, so understanding spaceflight’s effects on the human body will be even more important.

Here are some biological oddities that happen to your body if you’re in space for a year.

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Skye Gould and Rebecca Harrington, Tech Insider

Read: Take a break and watch two astronauts return to Earth after a year in space

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Business Insider
Business Insider is a business site with strong financial, media and tech focus.

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