![Two astronauts work on Hubble. The solar arrays are prominently visible. One astronaut is perched on the robotic arm.](https://science.nasa.gov/wp-content/uploads/2024/03/solar-array-drive.jpg?w=4096&format=jpeg)
Astroanauts Harbaugh and Tanner on Hubble
Gregory J. Harbaugh (left) and Joseph R. Tanner (right) perform a Mobile Foot Restraint (MFR) exchange.
Credits: NASA
Image CreditNASA
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Gregory J. Harbaugh (left) and Joseph R. Tanner (right) perform a Mobile Foot Restraint (MFR) exchange.