you definately are a teacher of political science. your main points usually have to do with the wording of things rather than the actually meaning. of course its the speed. that does not mean its not used that way. if everyone understand that light means speed of light, why bother spelling it out. the point is, its still relative to light. the speed of the car is relative to cars. if your talking about car speeds your not going to be discussing horses.
light is made up of photons. this is the smallest quantively defineable (by our present lvl of science) opject. its either a particle that acts as an energy wave, or an energy wave that acts as a particle. (i studied laser, so i know about light) any thing smaller than it is appearantly energy. any thing bigger that that is a particle.
gravity is a field, it reaches everywhere, goes through everything. energy cant.
here is an analagy to gravity.
the ocean has waves. these waves can travel 100's of miles an hours. that does not mean the water moves anywhere. if there is a current it could be going in a completely different direction of the wave.
there is a theory as yet unproven that gravity has waves. if it does it will be like the waves of the ocean. just because the waves are moving, the gravity might not be.
