thanks guys. i had a feeling that "special relativity" had something to do with it. it's new to me and will take me a while to understand.
but i wasn't talking about looking back from the train at the other train moving away. i was talking about looking forward at the other train coming...
im having trouble understanding why the speed of light is a speed limit for space crafts
light has an origin. and from what i understand, the doppler effect only changes the wavelength, not the speed of the wave
but Earth is spinning very fast and traveling very fast through space and our...