[Lokibob]

Are you saying the speed of light times 2? Doesn't that violate relativety?

IMHO, the photons would build up in the lights. As somebody said, the plastic bracket would melt.

Truthfully, I have no idea, just something that I wonder about, and yes, I need a life.

[mlo]

First, you can't have a space ship going at the speed of light, but let's say it is 99% the speed of light.

From each frame of reference the light from the headlights would be seen leaving the ship at the speed of light. Someone on the ship would see the beams projected out at lightspeed, and an outside observer would see the beams moving at lightspeed, or 1% faster than the ship.

The discrepencies this creates are resolved by the other relativistic effects of going that fast. While the observer sees the light beams moving barely faster than the ship, the people on the ship see them leaving the ship at lightspeed because time has also slowed on board the ship relative to the observer.

[oldcats]

Making this an even deeper "we both need lifes" discussion....
When driving the air inside of your car (if it doesn't have as many holes as mine) moves at the same speed of the vehicle....sounds produced inside of that vehicle should move at the speed of sound relative to the air inside....
The same should go for the photons of the light emitted from the headlights. They would not travel at twice the speed.
I am no physist...just a bored typist. If I am wrong, I will gladly admit it.
Oldcats