Subject: Do plastics in spacecraft or spacesuits show tracks from high energy events

I believe that I have seen photos of tracks in plastics that have been involved 
in space travel.  More specifically, these tracks seemed to be like a melt 
trajectory left by a high energy collision, of either micrometeoritic material, 
or more likely, high energy particles, such as cosmic rays.  Thank you in 
advance for any help you can give.

Re: Do plastics in spacecraft or spacesuits show tracks from high energy events