Does a year in space make you older or younger?
- Written by Susan Bailey, Professor of Radiation Cancer Biology and Oncology, Colorado State University
Are space twin Scott and Earth twin Mark no longer identical?Robert Markowitz/NASADaily life aboard the International Space Station moves fast. Really fast. Traveling at approximately 17,000 miles per hour, 300 miles above the Earth, astronauts watch 16 sunrises and sunsets every “day” while floating around in a box with a handful of...