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## Main Question or Discussion Point

Hi all

One things that puzzles me is the speed of light. We measure it always the same speed independently if we are moving or still. But here is where i get really confused: if we are moving against a light ray (imagine that I will "bump" with the light ray), the speed that we measure is the same if we are moving in an oposite direction (light moves one direction while I move the oposite direction but moving away)?

Second doubt: Is the slowing of satelites clocks in relation to the Earth clocks the proof (or at least on of the proofs) of the constant of the light speed? I don´t get it. Its to confusing to me.

Thank you

One things that puzzles me is the speed of light. We measure it always the same speed independently if we are moving or still. But here is where i get really confused: if we are moving against a light ray (imagine that I will "bump" with the light ray), the speed that we measure is the same if we are moving in an oposite direction (light moves one direction while I move the oposite direction but moving away)?

Second doubt: Is the slowing of satelites clocks in relation to the Earth clocks the proof (or at least on of the proofs) of the constant of the light speed? I don´t get it. Its to confusing to me.

Thank you