Endurance

A NOTE ABOUT THE AUTHORS

SCOTT KELLY is a former military fighter pilot and test pilot, an engineer, a retired astronaut, and a retired U.S. Navy captain. A veteran of four spaceflights, Kelly commanded the International Space Station (ISS) on three expeditions and was a member of the yearlong mission to the ISS. During the Year in Space mission, he set records for the total accumulated number of days spent in space and for the single longest space mission by an American astronaut. He lives in Houston, Texas.

MARGARET LAZARUS DEAN is the author of The Time It Takes to Fall and Leaving Orbit. She is an associate professor at the University of Tennessee and lives in Knoxville.