Space Can Alter Genes?

Lovella Wehye, Author

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NASA studies have recently shown that traveling in space can alter genetics, and a Twins Study back in 2017 can prove this. When astronaut Scott Kelly came back home from Expedition 46, about seven percent of his genetic expression was different. This was thought to be caused by stress during space travel, such as hypoxia, change in telomere length, and changes in collagen. His twin brother, Mark Kelly, was also an astronaut and decided to partake in the studies too. He was known as the control, because he stayed down on Earth during the whole process. This study was conducted to help scientists learn more about the health effects of space traveling, and how they could minimize the negative ones. NASA and many others are going about this path to ensure a planned three-year mission to Mars without any complications, and they want everything to be as safe as possible if they plan on being in space for that long.

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