4 ms·
We aren't projecting anything, we're observing this expansion backwards as far as we can see, right back to around the CMB. To take your analogy, we witnessed
by flukus 7y ago
We aren't projecting anything, we're observing this expansion backwards as far as we can see, right back to around the CMB.
To take your analogy, we witnessed the expansion of the metallic sphere from a point too small for us to see, there may be more going on that we don't understand, but it certainly looks like it expanded out of nothing.
- drran 7y agoAll that is speculation, which was based on two premises: 1) Hubble constant has value about 70(km/s)/Mpc; 2) with distance, we see "younger" (bluish) galaxies. (1) - wrong, Hubble "constant" has different values depending on frequency of light or radiowaves used for measurement. (2) - wrong, but papers about this started from 2008 only. In short, increasing diameter of telescope makes galaxies look "older".