Kelly astronaut twins to participate in year-long NASA experiments
Astronaut Scott Kelly will try something no American has ever done before, while his twin, retired astronaut Mark Kelly, spends the mission on Earth. As NASA looks towards an eventual three-year long round trip to Mars, the Kelly brothers have become key to figuring out how to prepare for and protect the human body during lengthy trips in space. Don Dahler reports.

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Can humans cope with long space travel? Astronaut Scott Kelly spent a year as a guinea pig

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Twin Brothers Mark & Scott Kelly Reflect on Being Astronauts Together

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Scott Kelly Doesn't Have Space Madness... Yet

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Former Navy SEAL and doctor Jonny Kim making first trip to space

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Dining on the Space Station

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Mark Rober’s $60 Million Science Experiment | TED

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NASA twins study reveals space flight can cause genetic changes

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Astronaut Alexander Gerst beantwortet eure Fragen (und die aus dem Hart aber fair-Team)

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Scott Kelly returns to Earth after nearly a year in space

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Astronaut Scott Kelly on the psychological challenges of going to Mars

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The First Thing Captain Scott Kelly Did On Earth After 340 Days In Orbit

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My Blue Origin Flight to Space!

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A Year In Space: Episode 11 - Gravity | TIME

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Astronaut Tips: How to Wash Your Hair in Space

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Terrifying moment stranded astronauts nearly drifted into space | 60 Minutes Australia

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At Home with Commander Scott Kelly

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Space Camp Lets You Become An Astronaut Without Leaving The Planet | Mach | NBC News

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President Obama & NASA Astronaut Scott Kelly

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My Golden Retriever Heals a Terrified Rescue Kitten in Just 3 Meetings!

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