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Quote by: kfinkelstein  Forgive me if this is a stupid question. If two objects are moving toward each other at approximately the speed of light, would not their speed relative to one another be approximately twice the speed of light, thus breaking the light barrier? |
The two objects would be approaching each other faster than if one were stationary and the other moving. However, as you point out neither object would be exceeding the speed of light. The "light barrier" is not, therefore, broken.
To clarify, if two passenger jets approached each other at 500+ MPH their closing speed would exceed the speed of sound, but there would be no sonic boom, because neither jet broke the sound barrier.