Space travel changes astronauts' DNA
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Our DNA can change in space. This could increase astronauts' chances of getting cancer. Scientists did research on astronauts' blood. The astronauts went on the Space Shuttle 20 years ago. They gave blood before and after going into space. A professor said radiation and other factors in space could change our DNA.
Many countries are working on going to Mars and the moon. Companies are starting the business of space tourism. Scientists will do more research to study how space travel could harm our body. This could help NASA's new Artemis project. This will send people to the moon for the first time since December 1972.
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