Quote (YaC @ 22 Apr 2013 11:49)
im not really sure, but I think blackholes have enough energy to make it even impossible for light to escape from them.
The definition of a Black hole originates from the idea that nothing can escape from its gravitational pull (No light can escape => You can not see it => Black).
Light (or rather photons) is to be affected by gravity - photons have no mass and thus aren't particles, but they do have a momentum - which also implies that an extremely massive body could have a gravity field large enough to not even allow light to escape from it. Ie: Black hole.
Theories claim that energy CAN escape from a Black hole, through Hawking radiation, but this isn't proven. That's a quantum physics thing btw, so it doesn't really contradict the statement that "not even light can escape it", even though it makes the Black hole something "not quite black".
Whether it is possible or not to accelerate a particle to the speed of light isn't exactly related to the light-can-not-escape-from-a-black-hole, since light isn't a particle and since light (obviously) travels at the speed of light(!).
Also, as Azrad said, a particle travelling at the speed of light would equal infinite energy, which isn't possible due to the fact that the Universe only contains a fixed amount of energy. Energy can not be created, as the first law of thermodynamics so kindly states.
