Pan-Dimensional Corps

Space isn't just the final frontier... it's the infinite frontier. If you believe the 'time is an unending loop' theory, it's the first frontier too. The Void Engineers hit the Universe beyond the Horizon in the mid-nineteenth century. They reached the other planets of the solar system in the teens and '20s, and used what they learned to kick the Nephandi beyond the horizon in the '40s. They stretched beyond the solar system in the '50s. It would have been sooner but Einstein and Kepler were working together to find the error in the theory of relativity and Kepler refused to do any calculations with a computer, preferring to work by hand. Once the error was found, faster-than-light travel became possible.