CAPE CANAVERAL, Fla.: Elon Musk’s SpaceX plans to resume flying rockets next week following an investigation into why one of them burst into flames on a launch pad four months ago, the company said on Monday. In a statement, SpaceX said it expected to launch a Falcon 9 rocket from California’s Vandenberg Air Force Base on Jan. 8 to put 10 satellites into orbit for Iridium Communications Inc. SpaceX had suspended flights after the same model rocket went up in a blaze on Sept.