Has anybody gone up there and tried to gather some evidence as to what hit it?
Whatever hit it will have left some kind of residue behind, kid of like when two cars hit, they transfer paint etc.
[edit on 8-1-2009 by Chadwickus]

The missing blade was found on the ground beneath the turbine, she said, adding that the company could not speculate on the cause of the damage.and
"An engineer has been on the site since it happened, early on Sunday morning, and is carrying out a sort of forensic investigation."

yet
the guy that said he saw a round glow with red edges hovering above shortly before the turbine incident is of equal interest.