infinite accelerations??? My question is about time dialation. I know that as one approaches light speed time dialation occurs. Now this dialation of time is the result of accelarations. what happens if one maintains a constant speed of lets say 50% of C. once speed is constant wouldnt the effects of accelartion and gravity return to zero? If so would time dialation also cease? I know once you take off on a commercail airliner one feels G accelrations but once altitude is reached one hardly feels movement or any significant G forces. Does the same thing apply for time dialation once a ship reaches and sustains a constant speed regardless of what % of C it is?