RADCAL
... that the RADCAL satellite, designed to have a three-year lifespan, operated for almost twenty?
... that the <b id="mwBUQ"><a href="./RADCAL" id="mwBUU" rel="mw:WikiLink" title="RADCAL">RADCAL</a></b> satellite, designed to have a three-year lifespan, operated for almost twenty?