First successfully measured by Terrance Wilcox on June 24th 2083, a long theorized light spectrum existing far below known wavelengths. Sub-spectrum wavelengths travel 200 times faster than the upper light spectrum, outside normal space, and passes through all known matter. It cannot be reflected or bent like visible light, and many scientists theorized that sub-spectrum light played some role in our perception of time.
In April of 2088 Eugene Mills, a 28 year old engineer working for a small technology firm in former Canada, createed the Sub-Light Data Burst Communications array. The immediate advantage of the SLDB system was speed of communication over long distances. Eugene also devised a method for secure communications by spreading data across multiple wavelengths making the signal nearly impossible to intercept. SLDB quickly replaced MBUS technology for deep space communication and persists to this day as the primary communications technology, with noted advances in hardware and data compression.