[ben_w]

I think you've mistaken thousands of years for millions.

As per your own link:

  Solving for z_rec gives value around 1100, which converts to a cosmic time value around 400,000 years

[abainbridge]

Doh. Thanks.

[magicalhippo]

If it makes you feel any better I had the same exact reaction as you and almost posted the same thing, but managed to catch my error just in time.