Re: Where did the energy go?
Ok, but I don't have much to give you.
I could tell you but that would be "history" and "history is bunk".
Originally Posted by lyndonashmore
I would like to hear the history of all this myself. I think once Hubble used Cepheids to determine distance, the redshift became a useable number in calculating the expansion. I assume this was all based on Doppler motion. Redshift yielded motion and the Cepheids yielded distance. Redshift divided by distance should yield the original Hubble Constant. I am assuming this is how it was done. At the time, Hubble did not know that all Cepheids were not the same and his number was off as a result.
Supernova (1a class) are the modern "standard candles" for determining vast distances. Their light curves are quite predictible and at great distances, time dilation becomes apparent. This dilation does serious damage to ideas that support cosmological redshift is a result of photons getting "tired". Normally, "tired light" is used as a way to suggest there is no expansion. Just how GR might factor into this is probably over my head.
We know time flies, we just can't see its wings.