Today, I was watching the Inexplicable Universe with Neil deGrasse Tyson.
He spoke about Dark Matter, Dark Energy, and then he spoke about Tachyons.
Naively, I thought what if the reason we can't understand dark matter/dark energy is because it is moving faster than light?
I would be very interested how this fits in to the current thinking about tachyons and dark matter/dark energy? Is there an obvious point that makes this association impossible? Is there a property of tachyons that is clearly in opposition to what we know about dark matter/dark energy?