Science outside the station
After deploying the twin pole shield, the Skylab 3 spacewalkers deployed the Skylab Particle Collection S149 Experiment, which was mounted to the Apollo Telescope Mount. The purpose of this experiment was to “collect material from interplanetary dust particles on prepared surfaces suitable for studying their impact phenomena,” according to NASA. The Skylab 4 crew performed a pair of impromptu spacewalks to install an ultraviolet camera used to observe Comet Kohoutek.
