I am a little confused as to how cosmologists think the Universe is expanding and that this expansion is accelerating.....
My reason for this confusion is this. If we peer into deep space then in effect we are looking back in time so the deeper you peer into space the further back in time you go. Cosmologists say the deeper they look into space the faster the galaxies are moving so they use this as a statement that the Universe is expanding but they are looking back into the past so surely that must mean the galaxies were moving faster in the past then they are today.
Please help me to get this clear in my mind and explain this conundrum?
Tony