Astronaut flexes his muscles mid-spacewalk | Space photo of the day for July 7, 2026

Astronaut flexes his muscles mid-spacewalk | Space photo of the day for July 7, 2026 A Muscle Beach pose outside the International Space Station. Mid-spacewalk, one NASA astronaut had to take a moment to show off his muscles. What is it? NASA astronaut Chris Williams recently left the confines of the International Space Station for a 7-hour-and-20-minute spacewalk with fellow astronaut Jessica Meir. This was Williams' second spacewalk and Meir's fifth. In a moment of fun, Williams flexed his muscles for a photo snapped by Meir during the strenuous spacewalk. With a big grin on his face, visible even through his spacesuit helmet, Williams raised his arms in a classic Muscle Beach pose as planet Earth glowed hundreds of miles beneath him. But the pair of astronauts weren't playing around in space; this spacewalk had a serious purpose. On June 30, Williams and Meir ventured into the void to replace a wrist joint on the space station's Canadarm2 robotic arm that had been malfunctioning. Canadarm2 has been operating for over 25 years, so it makes sense that every once in a while it needs a repair or upgrade. After making this swap, the old wrist joint will be sent back to Earth to be fixed in case it needs to be used as backup in the future. Why is it incredible? Williams' demeanor in this photo makes it seem like spacewalks are fun, or even easy. But his smile and playful pose for the camera are a major contrast to the incredible strength, stamina and careful work that it takes to complete a spacewalk. From preparation to suiting up, and doing incredibly precise work with a spacesuit on while floating in the vacuum of space while tethered to the space station, spacewalks are incredibly hard work. Williams may have been having a fun moment with Meir showing off in this photo, but the pair of astronauts were certainly using their muscles to get a tough job done. You must confirm your public display name before commenting Please logout and then login again, you will then be prompted to enter your display name. Chelsea Gohd served as a Senior Writer for Space.com from 2018 to 2022 before returning in 2026, covering everything from climate change to planetary science and human spaceflight in both articles and on-camera in videos. With a M.S. in Biology, Chelsea has written and worked for institutions including NASA JPL, the American Museum of Natural History, Scientific American, Discover Magazine Blog, Astronomy Magazine, and Live Science. When not writing, editing or filming something space-y, Gohd is writing music and performing as Foxanne, even launching a song to space in 2021 with Inspiration4. You can follow her online @chelsea.gohd and @foxanne.music