The way I understand it is the farther away a object is the faster it is moving away from us, but also the farther away something is the older it is. So could that mean things were moving apart faster in the past but are slowing down?
The way I understand it is the farther away a object is the faster it is moving away from us, but also the farther away something is the older it is. So could that mean things were moving apart faster in the past but are slowing down?
The distance does matter. There are ways of measuring/estimating distances other than red shift. So basically you plot the distances against the red shift and if the relation is linear, the rate of expansion is constant, and that isn’t the case. Interestingly, it seems lately that the rate is different based on which way of measuring you use. Something is probably wrong and nobody knows what. That is exciting, because this is how you discover new things.