Nova flies up towards Frank's chest, going faster and faster until he goes straight through Frank's chest cavity, TEARING his heart to shreds, then coming out the other side.  This effectively killed Frank, as there is NO WAY someone can survive having their heart blown up.  And if Frank says that he CAN survive that, then he is just an OP douche bag. "FINALLY! HE'S DEAD! WOOHOO!!" Nova yelled at the top of his lungs in celebration.