Tachyons and all that jazz

Star Trek has given us many of what are today common devices and items ... from communication devices to who knows what all. But this may not be one of them ... 'Tachyon beams'.

Relativity does not rule out a realm of particles that can only travel faster than light, but a new study suggests they may be fundamentally impossible.

Faster-than-light 'tachyons' might be impossible after all