Your question piqued my curiosity, so I did some googling... Apparently sharpies do work in space, though NASA seems to prefer the Duro brand of marker. https:

Your question piqued my curiosity, so I did some googling... Apparently sharpies do work in space, though NASA seems to prefer the Duro brand of marker. https://airandspace.si.edu/stories/editorial/saga-writing-space https://airandspace.si.edu/stories/editorial/saga-writing-sp...