Gap Drives changed everything when they were discovered. The first Gap Drive was made by accident while a group of researchers were attempting to create a new method disassembling matter. This research was one step on the path to teleportation, and the intention was to find a way to reassemble the matter once they succeeded.
When testing one of the prototype devices, they found that it caused matter to disappear, which they believed was a success, but the matter reformed after a couple minutes, much to their bewilderment and dismay. Ironically enough, the unit was put aside so they could continue their intended research, and it wasn’t until months later someone investigated the actual nature of this accidental invention.
Years later, scientists were able to determine that this device was not disassembling matter, rather, it was taking it out of percievable reality and into another space, many theorize another dimension. They discovered that a number of vectors affected what happened to matter when they entered this state, such as the mass of the object, and the direction and velocity of the object. If the object entered the “Gap” – as it was nicknamed – at a certain speed, it would exit the gap in a location roughly two minutes later that multiplied the calculated velocity at the time of entry by thousands.
This was incorrectly called “going into tach” and “resuming tard”, referring to the tachyon/tardyon principle which was originally believed to be the cause of the phenomenon, but when this was debunked, the phrases remained popular and are still used today. These days, many ships are equipped with gap drives which were originally developed by CST, which extended the reach of the Earth’s EEM efforts to nigh-infinite distances, giving humanity the second chance it needed.