Scholar:
How about the Israel government's own archaeological site?
http://www.israel-mfa.gov.il/mfa/go.asp?MFAH00uy0
Seems to me that Isreal would have little reason to be biased about the date of the destruction of their own temple - especially if that date has anything to do with the second coming of the Messiah - after all, they are still waiting for his first appearance on earth.
So - is an unbiased and scholarly source good enough for you?