Outer space changes you, literally. Here's what it does to the human body

Lower gravity. Higher radiation. No ER access. These are just a few of the challenges that humans face in outer space. Emily and Regina talk to a NASA astronaut (and astronaut scientist) about the impact of spaceflight on the human body. Plus, we learn about telomeres (hint: They change in space)!

Check out more of our series on space: https://www.npr.org/spacecamp

Interested in more space science? Email us at shortwave@npr.org.