Michael Barratt is a notable figure in the field of astronomy and space science. He is best known for his work as an astronaut with NASA, where he participated in several missions to the International Space Station (ISS). Barratt has a background in medicine, holding a medical degree and specializing in aerospace medicine, which has contributed to his expertise in human health in space. In addition to his astronaut career, Barratt has been involved in various research projects related to space exploration. He has contributed to studies on the effects of microgravity on the human body and has worked on developing technologies to support long-duration space missions. His contributions have helped advance our understanding of living and working in space.