Into Darkness has warped its way to a $70.6 million domestic launch from Friday to Sunday, though it's not setting any light-speed records with a debut that's lower than the studio's expectations. The latest voyage of the starship Enterprise fell short of its predecessor, 2009's "Star Trek," which opened with $75.2 million. Since premiering Wednesday in huge-screen IMAX theaters and expanding Thursday to general cinemas, "Into Darkness" has pulled in $84.1 million, well below distributor Paramount's initial forecast of $100 million. Robert Downey Jr.'s superhero saga took in $35.2 million domestically to lift its receipts to $337.1 million. While "Iron Man 3" and "Into Darkness" did well overseas, they were outmatched by the debut of Baz Luhrmann's "The Great Gatsby," which followed its domestic debut a week earlier with a wide rollout internationally. In today's Hollywood of bigger, better sequels, follow-up films often outdo the box office of their predecessors, as each "Iron Man" sequel has done. While "Into Darkness" earned good reviews and is getting strong word-of-mouth from fans, the film did not quite measure up to the opening weekend of director J.J. Abrams' "Star Trek" reboot from four years ago, at least domestically. Paramount points out that overseas business is up in many markets, though, so that worldwide, the sequel is off to a better start. Because of the nature of the franchise, because of how many movies have been made and the various forms of the TV shows, I'm not sure that 'Star Trek' goes by the rules of normal sequels. Universal and Focus are owned by NBC Universal, a unit of Comcast Corp.; Sony, Columbia, Sony Screen Gems and Sony Pictures Classics are units of Sony Corp.; Paramount is owned by Viacom Inc.; Disney, Pixar and Marvel are owned by The Walt Disney Co.; Miramax is owned by Filmyard Holdings LLC; 20th Century Fox and Fox Searchlight are owned by News Corp.; Warner Bros. and New Line are units of Time Warner Inc.; MGM is owned by a group of former creditors including Highland Capital, Anchorage Advisors and Carl Icahn; Lionsgate is owned by Lions Gate Entertainment Corp.; IFC is owned by AMC Networks Inc.; Rogue is owned by Relativity Media LLC.