On 13 June 2014 03:50, <[email protected]> wrote: > Yes, light changes speeds many time as it passes through our Universe, but > it is always traveling at the speed of light through the grid it is > currently traveling through. There is no reason for it to become blurred. > When light travels through a good prism or a microscope or a telescope it > can change speeds several times and it does not necessarily become > blurred. >
My point is that a distant extended object will send light through regions of space which are at a large distances from each other on its way to our telescopes. So a galaxy which appears to us to be partly hidden by another galaxy is sending light through a region of space thousands of light years across. This region contains a large number of massive objects, such as stars. If these all have their own CGs, each one travelling at a different speed, the light signal would be effectively scrambled as it passed through this varying "landscape" on its way to us. But it isn't, as thousands of astronomical pictures of galaxies at different distances which happen to lie along the same line of sight show. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
