Donald Gurnett
... that plasma physicist Donald Gurnett was part of 41 NASA missions, including Voyager 1, for which he designed the instrument that confirmed that the craft had crossed the heliopause in 2012?
... that <a href="./Plasma_(physics)" id="mwBOU" rel="mw:WikiLink" title="Plasma (physics)">plasma physicist</a> <b id="mwBOY"><a href="./Donald_Gurnett" id="mwBOc" rel="mw:WikiLink" title="Donald Gurnett">Donald Gurnett</a></b> was part of 41 <a href="./NASA" id="mwBOg" rel="mw:WikiLink" title="NASA">NASA</a> missions, including <a href="./Voyager_1" id="mwBOk" rel="mw:WikiLink" title="Voyager 1">Voyager 1</a>, for which he designed the instrument that confirmed that the craft had crossed the <a href="./Heliosphere#heliopause" id="mwBOo" rel="mw:WikiLink" title="Heliosphere">heliopause</a> in 2012?