![An astronaut poses for a picture through the back windows of the Space Shuttle.](https://science.nasa.gov/wp-content/uploads/2023/07/28075653522-aeb5056eb7-o.jpg?w=4096&format=jpeg)
STS-125 MS4 Mike Massimino Poses for a Photo during Flight Day 7
STS-125 Mission Specialist 4 (MS4) Mike Massimino poses for a photo during the fourth session of extravehicular activity (EVA4).
Credits: NASA
Image CreditNASA
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STS-125 Mission Specialist 4 (MS4) Mike Massimino poses for a photo during the fourth session of extravehicular activity (EVA4).