744K views · 16K reactions | The key to getting off to a good start on a spacewalk? Hours of practice. See how astronauts Mike Hopkins and Victor Glover put what they learned on the ground to use in space. NASA TV coverage begins at 5:30 a.m. EST on Mon., Feb. 1: www.nasa.gov/live | NASA - National Aeronautics and Space Administration | Facebook

The longest spacewalk ever by American astronauts took place in 2001 and lasted almost nine hours. Do you know how long the very first U.S. spacewalk lasted? | NASA's Johnson Space Center