Recent content by aderowbotham

Because in my example the light left the object when it was much closer to us – say 1bn ly (I didn't specify a distance). The light from the source would have reached us much sooner than 13bn years later if the rate of expansion between us and the source was much smaller. The values in the...

@marcus - Great, thanks. I love trying to wrap my mind around these concepts.

Many thanks - that's great!

Sure; light, by definition, takes 13bn years to travel 13bn light-years. Though yes, I didn't account for the fact that 13bn light years was only the distance for the particular journey of the light we are recording now. Not necessarily the distance now or the distance when the light left it...

I understand that Spacetime is expanding, as demonstrated by the increase in red-shift with distance. And I also understand that light travels *through* spacetime which itself is expanding. It seems rational to me that one may compare the rate of spacetime expansion to the speed of light...