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• Anybody here able to help me with this question regarding relativity?

  Asked by LostInParadise | 16 responses

• Why is there nothing, nor can there be anything, faster than the speed of light?

  Asked by joeschmo | 16 responses

• Can anything with mass go the speed of light?

  Asked by jackm | 30 responses

• If you had a object one light year long and you pushed on it how long would it take to feel it from the other end?

  Asked by talljasperman | 49 responses

• How do we know there is nothing faster than the speed of light?

  Asked by cockswain | 81 responses

• What are the ranges for the speed of light?

  Asked by RedDeerGuy1 | 8 responses

• At what speed would you experience a year when traveling a light-year?

  Asked by davidgro | 15 responses

• What happens when the expansion of the Universe reaches the speed of light?

  Asked by ETpro | 28 responses

• How does an IFR observer measure the speeds of two craft going oppisite directions approaching "C"?

  Asked by mr_g | 8 responses

• How slow can we make a beam or photon of light go?

  Asked by talljasperman | 13 responses

• What do you think would happen if we broke the speed of light in a vacuum?

  Asked by xxporkxsodaxx from iPhone | 22 responses

• (Kindly read the details before answering) How much energy would be actually required for a 1 kg object to reach the speed of light in a vacuum?

  Asked by krrazypassions | 14 responses

• How can you measure the speed of light, when it is not possible to define an absolute point in space?

  Asked by Jbor | 8 responses

• How would you answer this speed-of-light question? (See details)

  Asked by ETpro | 26 responses