Trope-a-Day: Unobtainium
Unobtainium: Of many kinds. Sophisticated materials science is one of the major areas of advancement in this particular universe. Of particular note: deuterium slush, metastable metallic hydrogen, helium-3 and antimatter (more specifically, antideuterium slush) for power, room-temperature superconductors, sapphiroids (the trade name for the high-grade kind is Adamant™ – not adamantium,