NGC 5585
... that the spiral galaxy NGC 5585 contains a supernova remnant that is over 650 light-years long, 300 light-years wide and still expanding?
... that the spiral galaxy <b id="mwECA"><a href="./NGC_5585" id="mwECE" rel="mw:WikiLink" title="NGC 5585">NGC 5585</a></b> contains a <a href="./Supernova_remnant" id="mwECI" rel="mw:WikiLink" title="Supernova remnant">supernova remnant</a> that is over 650 light-years long, 300 light-years wide and still expanding?