When Spock successfully destroys the supernova, the "Narada" appears to attack when the black hole flings it and the "Jellyfish" back in time, leaving Picard and the crew of the "Enterprise" as witnesses to Spock's sacrifice. Reviews of the first issue of "Countdown" by "IGN", "Ain't It Cool News", TrekMovie.com and TrekWeb were positive. IDW editor-in-chief Chris Ryall blogged that although more than the intended volume had been printed, "Countdown" sold out within two weeks of its publication. "IGN" also positively reviewed the third and fourth issues, while "io9" also published a positive review of the entire series. The series has been collected into trade paperback and hardcover editions: