Quasar found 13 billion years away

"jn" == jacob navia writes:

jn Oh No wrote:
Thus spake jacob navia
John Hutchings et al has found a quasar (the most distant known)
at approx 13 billion years, z=6.43.
Since the mass of the quasar is 500 million suns, and it has
formed in about 500 million years, it must have swallowed 1
sun/year more or less.

That is a slight underestimate in standard (concordance)
cosmology. Ned Wright's calculator has z=6.43 as 790 Mill years
after the big bang.

jn 790 million years after the bang, but the "Dark ages" took around
jn 300 million years, that leaves 500 million years for forming the
jn galaxy and the quasar...

Why do you think that the quasar and host galaxy could not have
started forming during the Dark Ages?

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