noob question

is a photon a form of energy?
if so how can it get bajillions (i made that word up but if you have half a brain i think you get what i mean) of miles away?
does light have infinite energy? or just infinite enertia? i know light is affected by gravity since it can be sucked up by black holes, but it seems to me that if there is no gravity, and the light does not spread apart.... well lets say somehow someone is traveling the same speed as light. he looks at a star. lets also say the particles do not spread out but stay paralell to each other in one direction, the direction of the path of the person's ship which also doesnt change. would the sun appear to be the same distance no matter how far you got?

controdicting myself here, doesnt light eventually die? or do the photon's themselves just spread out too much to not register it anymore? and if it never dies, why dont we just use light as an infinite power source? and i dont mean solar panels or the nuclear reactor of the sun's radiation bombardment.

in b4 nerds, google, wikipedia, etc

light doesn't have any mass, which means it requires no acclerating force or anything to reach the max speed limit allowed in this universe.
light is not affected by gravity, the room it travels trough however is.
i don't really understand the rest of your reasoning.

Light *is* affected by gravity, see "redshift".

>>3
redshift is just doppler effect on light, no gravity requirements for it.

gravitational lensing

Light appears to be an interaction between a magnetic wave and an electric wave.

Light is affected by the curvature of spacetime, and spacetime is curved by gravity, so light is affected by gravity.

>>4
I always wondered:  if light always has the same velocity regardless of reference frame, then how can redshift even occur?  Is it only when one reference frame is accelerating with respect to the other?

>>8

The velocity of the wave isn't affected during red shift. The only things affecting the doppler effect are the velocities of the observer and the emmiter.

>>8 and >>9
Redshift is when a longer wawelenght accurs due to the speed-difference between observer and emitter