This is a chapter of fictional science. Can be skipped without missing any important plot details.
Climbing out of the terrestrial Age
By Bubb Henrin
Near the end of the terrestrial age, many human scientists had begun to believe that the human race had reached its technological ceiling. Many technologies that man daydreamed about for a long time were deemed impossible due to limitations set not by human intellect but the realities of physical law. The latter would eventually prove to be true as the elves first arrived on Earth and came bearing the secrets of two frontiers of science.
The first one is gravitium-based space-time manipulation technology making possible artificial gravity wells and fast travel between stars that would otherwise take generations. The lesser known but equally important is the stabilization and synthesis of exotic matter. This includes everything from muon relaxation, neutrino capture, anti-matter trapping, and polyphoton synthesis.
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These breakthroughs led to materials with extraordinary properties from near-frictionless smooth materials, super thermal insulators, room-temperature superconductors, and super-strong materials. The introduction of super-strength materials in particular forever changed warfare as their incorporation into armor of vehicles and the hulls of ships made weapons necessitated the development of weapons like polyphoton guns and plasma that damage via heat rather than delivering an impact of a shell.
This new generation of materials also led to the creation of cubits that allow communications across solar systems and made SPG practical on much smaller vessels. The scientific knowledge making this all possible is, as in the case of SPG, hidden properties of leptons only evident within very specialized crystalline forms of matter. These super materials played as much a role of getting man out of the terrestrial age as SPG technology.