Voronium

Voronium is an element with the symbol Vr and the atomic number of 139. It is a stable, non-radioactive element, and is the only known substance that can enable faster-than-light travel. It was discovered independently by Viechtyren, human, and Arkhir.

It is a surprisingly common element. It can be extracted from Voron gas (VrF3, voronium trifluoride), which makes up the majority of the gas giant Voror, which is where voronium's name comes from. It has since been discovered in many other gas giants around the galaxy, and the relatively stable isotope voronium-343 can be formed artificially by bombarding uranium-238 with silver-105 in ion accelerators.

Purified voronium is capable of creating wormholes when given a strong electric charge of over 300 volts. This "activated voronium", as it is called, melts holes through the fabric of spacetime. Its energy can be directed to form a sustained wormhole through space. Activated voronium is incredibly dangerous, and must be contained within a vacuum for it to work. It will annihilate any matter it touches, with the exception of voronium carbide (Vr4C3) which is used for barriers in voronium wormhole machines.

Voronium weaponry has been explored, but nothing has come of it yet. Its operational hazards are far too great for it to be useful, so far. To quote one Viechtyren physicist, "Voronium weaponry would be like a nuclear suicide bomb. No one, ally or enemy, would come out of it alive."