Anonymous

It doesn't, it justs gets weaker

Anonymous

The Heliosphere is small in comparison to interstellar space, and if there were any "slowdown" it would be very minimal (otherwise it would be detected by now), so between the two, it would not affect our estimates of stellar distances much if at all.

Anonymous

Star distances would be the same because the distances to most visible stars is determined by parallax, not time-of-flight.

Anonymous

We’d want to know why the laws of physics suddenly change close to the sun; it would mean distances to stars are greater than predicted if the speed of light was slower only in our vicinity, but faster everywhere else.

Anonymous

Our measurements wouldnt change, since the standard of measurement is the speed of light in a vacuum, and anomolous interactions would not alter this standard. We dont consider factors such as gravitational or magnetic distortions.