Tachyons cannot be used to communicate FTL even though they have v > c. See http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/tachyons.html http://math.u

Tachyons cannot be used to communicate FTL even though they have v > c. See http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/tachyons.html http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/tac... for a cool explanation. Regardless, neutrinos would seem to be a viable communication medium. SETI is considering how they may be used: http://www.seti-setr.org/SETI/neutrinos.html http://www.seti-setr.org/SETI/neutrinos.html