galactic habitable zone
... that the galactic habitable zone may encompass our entire galaxy?
... that the <b id="mwCDI"><a href="./Galactic_habitable_zone" id="mwCDM" rel="mw:WikiLink" title="Galactic habitable zone">galactic habitable zone</a></b> <i id="mwCDQ">(pictured)</i> may encompass our entire galaxy?