Retorts

Alien Flagpoles

[Ivan Millet [Retorts, Feb] speculated about aliens leaving messages at the Moon's poles, as the location wouldn't shift over time and it would be independent of mapping systems. Has anyone had a look there? I guess that the various moon missions of the Americans and Russians have mapped things pretty well, but probably not at a decent resolution.

I've seen debate about whether intelligent dinosaurs could've left any artifacts behind that we could recognise as "dinosaur-made". People have suggested that plastics and ceramics could survive a hundred million years of geological change, but I'm doubtful. Would any archaeologists or palaeontologists care to speculate?

My vote goes with evidence of mining activities. If the dinosaurs had had any brains, they wouldn't have left anything behind for us to develop.

Katherine Kerr, Christchurch