He's coming!
I have to say that this brilliant professor is as entertaining as he is smart (VERY) and was my number one choice for Astrofest since I saw him talk last year.
He gave us in-principle agreement for the talk back in Feb, but we have had to wait for a while to ensure a then unscheduled US trip didn't clash.
Who is he?
Well I am updating the Astrofest home page in the next half hour with the announcement and I will post again when its done. In the meantime, any guesses?