Thor
... that in August 2001, the Galileo spacecraft flew through the sulfur dioxide gas plume of the Ionian volcano Thor ?
... that in August 2001, the <a href="./Galileo_(spacecraft)" id="mwFwE" rel="mw:WikiLink" title="Galileo (spacecraft)">Galileo</a> spacecraft flew through the <a href="./Sulfur_dioxide" id="mwFwI" rel="mw:WikiLink" title="Sulfur dioxide">sulfur dioxide</a> gas plume of the <a href="./Io_(moon)" id="mwFwM" rel="mw:WikiLink" title="Io (moon)">Ionian</a> volcano <b id="mwFwQ"><a href="./Thor_(volcano)" id="mwFwU" rel="mw:WikiLink" title="Thor (volcano)">Thor</a></b> <i id="mwFwY">(Io with Thor pictured)</i>?