Androcles wrote:

Yes, the best way to think of the problem is an absolute
frame of reference centred on the sun. What do you think
should be the velocity of light in such a frame?
What should it be relative to the vehicle?
Androcles.




When you say "relative to the vehicle", do you mean the speed of a
photon as measured in the vehicle's own rest frame, or do you mean the
speed that the distance between the vehicle and a photon grows, as seen
in the sun's rest frame? You understand that relativity only says the
first one has to be equal to c, not the second one, correct?

Jesse