Ever wonder how Astronauts get in and out of a spacecraft during a spacewalk? 🤔🚀 They use something called an airlock, a special chamber that keeps the spacecraft pressurized while allowing astronauts to step into the vacuum of space. Fun fact: The first space airlock was disposable and launched with Voskhod 2 back in 1965! 😲 👨‍🚀 Would you go on a spacewalk if you had the chance? We Believe In Astronauts™ | National Astronaut Day

237K views · 1.6K shares | On yesterday's spacewalk, astronauts Chris Cassidy and Robert Behnken each made their 10th spacewalk, tying the record for most by NASA Astronauts. Cassidy is now ninth among Americans for most hours spacewalking, and Behnken is fourth. Congratulations! https://go.nasa.gov/39isE8Q | NASA - National Aeronautics and Space Administration | Facebook