The firm also adds that it's "finalizing the investigation" into the September launchpad explosion that prompted the pause on rocket launches. What that entails isn't clear, but investigators narrowed down the cause to liquid oxygen fuel freezing and triggering a chain of explosions. It's a novel problem, according to Elon Musk, but it's something that can be solved through different conditions for loading helium into the vehicle. Suffice it to say that SpaceX will be crossing its fingers with the January launch -- another incident would undermine claims that it has learned its lesson.