A victory by the team seems 'within the realm of possibility'. [=a victory seems possible]
It's not 'beyond the realm of possibility' [=it's not impossible] that he will return.
new discoveries in the 'realm' of medicine
(..) Count Odo has been I trusted and rewarded him. And for such deception and treachery, there can only ever be one punishment. Your Grace will now be entrusted completely with the defense of our realm. This is the Iron Hand of Frankia. I give it to Your Grace as a symbol of my favor. (BELL TOLLING) (..)2016 TvShow: Vikings Title: Portage Season: 4 Episode 8