Passive Seismic Experiment Package
... that the Passive Seismic Experiment Package recorded one of the first instances of humans littering on another planetary body?
... that the <b id="mwBRs"><a href="./Passive_Seismic_Experiment_Package" id="mwBRw" rel="mw:WikiLink" title="Passive Seismic Experiment Package">Passive Seismic Experiment Package</a></b> <i id="mwBR0">(pictured)</i> recorded one of the first instances of humans littering on another <a href="./Planetary-mass_object" id="mwBR4" rel="mw:WikiLink" title="Planetary-mass object">planetary body</a>?