Pillan Patera
...that the 1997 volcanic eruption of Pillan Patera on Jupiter's moon Io was the largest effusive eruption ever witnessed?
...that the 1997 volcanic eruption of <b id="mwBMc"><a href="./Pillan_Patera" id="mwBMg" rel="mw:WikiLink" title="Pillan Patera">Pillan Patera</a></b> on <a href="./Jupiter" id="mwBMk" rel="mw:WikiLink" title="Jupiter">Jupiter</a>'s moon <a href="./Io_(moon)" id="mwBMo" rel="mw:WikiLink" title="Io (moon)">Io</a> was the largest <a href="./Effusive_eruption" id="mwBMs" rel="mw:WikiLink" title="Effusive eruption">effusive eruption</a> ever witnessed?