As I’m in Australia at the moment it seems entirely appropriate to link to this post by Jennifer Ouellette which suggests that some Aboriginal people created a astronomical observatory at Wurdi Youang, a stone circle near to Melbourne. Obviously a lot can happen in an investigation in a year, and the whole thing may have been disproved by August 2010, but when I get back to the con today I shall seek out Sue Ann Barber and suggest to her that an email to the Melbourne Planetarium might be a good idea. I’d love to see some discussion of this at Worldcon.