![NASA spacewalkers Bob Behnken and Chris Cassidy](https://www.nasa.gov/wp-content/uploads/2023/03/iss063e053998.jpg)
Thumbs Up From Out of This World
ASA spacewalkers (from left) Bob Behnken and Chris Cassidy give a thumbs up during a spacewalk to install hardware and upgrade International Space Station systems.
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https://www.nasa.gov/image-detail/thumbs-up-from-out-of-this-world/
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