18K views · 224 reactions | First private spacewalk in history | Science Of The Universe | Facebook

45K views · 4.6K reactions | Last week, NASA astronaut Bob Behnken and station Commander Chris Cassidy stayed 2 hours ahead of their spacewalk timeline, working with speed and precision. Tomorrow, they'll float out to finish the work they started. Listen as Cassidy explains how it happened on the first time the duo suited up together, then learn how to watch: https://go.nasa.gov/2VbKzs9 | International Space Station | 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