Analysis: Even Short Trips to Space Can Change an Astronaut's Biology

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Analysis: Even Short Trips to Space Can Change an Astronaut's Biology
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NASA just announced that the two Starline astronauts could be stuck in space for months.

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NASA selected astronaut Scott Kelly for the agency’s first one-year mission, during which he spent a year on board the International Space Station from 2015 into 2016. Over the same time period, his identical twin brother, Mark Kelly, a former astronaut and current U.S. senator representing Arizona, remained on Earth.collected from the twin in space and his genetically matched twin back on Earth before, during and after spaceflight.

As you get older, your telomeres shorten because of a variety of factors, including stress. The length of your telomeres can, my team studied a cohort of ten astronauts on six-month missions on board the International Space Station. We also had a control group of age- and sex-matched participants who stayed on the ground.

What’s particularly interesting about these findings is that the Inspiration4 mission lasted only three days. So, not only do scientists now have consistent and reproducible data on telomeres’ response to spaceflight, but we also know it happens quickly. These results suggest that even short trips, like a weekend getaway to space, will be associated with changes in telomere length.

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