![Astronaut Kathryn C. Thornton, center, grips a tool to perform servicing mission tasks on Hubble, left, with the Earth in the background on the right.](https://science.nasa.gov/wp-content/uploads/2023/04/team-hubmissions-jpg.webp?w=4096&format=png)
Kathy Thornton EVA
Astronaut Kathryn C. Thornton grips a tool to perform servicing mission tasks on the Hubble Space Telescope during the fourth spacewalk of the 11-day mission.
Credits: NASA
Image CreditNASA
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Astronaut Kathryn C. Thornton grips a tool to perform servicing mission tasks on the Hubble Space Telescope during the fourth spacewalk of the 11-day mission.