Uc Science Today

Everything that humans are used to on Earth changes in space and that’s what astronauts should be prepared for during long space trips. “You are now in microgravity, which means that you don’t have these loads on not just your skeleton, but your skeletal muscle, your heart, your sense of balance.” That's imaging scientist Thomas Lang, of the University of California, San Francisco. He explains that astronauts are exposed to a dangerous level of radiation, which increases the risk of cancer and brain damage. “To some extent in lower Earth orbit we are protected by Earth’s magnetic field, but once we go to, as proposed to these NASA missions, back to the Moon or to deep space habitats in cislunar orbit, there we are going to be exposed to solar, wind, as well as galactic heavy ion- radiation.” Add to that isolation and the absence of daylight, and space travel might not seem so appealing. But researchers like Lang are working on strategies to make space trips a healthier experience.