The immune systems of astronauts can be temporarily altered in space. It is not yet clear how these changes arise, but the findings suggest they could be more susceptible to illness. #astronautproblems (SourceSpace.com)
Celebrate all things #space at MOSI (Museum of Science & Industry) during World Space Week. #WSW2014 is included with MOSI admission and free for members. Visit MOSI.ORG for more information.