ALT NASA astronaut Kate Rubins is pictured during a spacewalk in September of 2016 working on solar array maintenance.

ALT NASA astronaut and Expedition 64 Flight Engineer Michael Hopkins works on hydroponics components for the Plant Water Management study that is exploring ways to sustain plants in microgravity from germination through harvest.

ALT NASA astronaut Michael Hopkins points his camera, insulated from the harmful environment of space, toward his spacesuit helmet's reflective shield and takes an out-of-this-world "space-selfie" during a spacewalk he conducted with fellow NASA astronaut Victor Glover (out of frame).

ALT NASA spacewalker and Expedition 64 Flight Engineer Victor Glover works to ready the International Space station's port-side truss structure for future solar array upgrades.

ALT NASA astronaut Michael Hopkins is pictured attached to Europe's Columbus laboratory module installing a science antenna and routing cables during a spacewalk with NASA astronaut Victor Glover (out of frame) that lasted six hours and 56 minutes on Jan. 27, 2021.

ALT NASA spacewalker and Expedition 64 Flight Engineer Victor Glover works to ready the International Space station's port-side truss structure for future solar array upgrades.

ALT Expedition 64 Flight Engineer Shannon Walker collects leaf samples from plants growing inside the European Columbus laboratory.