OK. <, sigh>> Skip to my final comment and don't feel you have to read/reply to this as it's probably a silly question and, as before, being totally irrelevant.
If there was a
straight line from A through B & C to
point D. (Have I lost you yet)
1) I am on point A with a speedometer oh and a mahoosive telescope.
2) If I were able to see points B & D, point C being invisible (big bang or whatever) and .......
..... I can see B & D are moving apart from each other at the speed of light what would my speedometer register as the relative speed that they were travelling apart...... I am assuming super dooper planets could move that fast
Give up reading now unless you want the same headache as I have.
3) My head is seeing 2 cars, driving in opposite directions, passing at 30 mph surely they would be moving apart at 60 mph
Off to go and lie down in a dark room.
Add// Just realised I'm probably confusing the speed of light with the speed of sound but I have spent so much time pondering about all this that I blowed if I'm going to delete the sodding post!!!!!!!!!!