And again, regarding alien reconnaissance of earth and leaving their trash behind on the moon - how does this make any sense whatsoever? Let's think critically, and not like some human that needs a duck blind or a platform in some trees so they can shoot the bears. If these aliens can traverse the stars is it really likely, by any stretch of the imagination, that they need to set up binoculars to spy in real time on us? Would they not just send out an orbiting nano-probe, invisible to all us humans, and send back relevant info via data stream technology entirely beyond our understanding? I don't see how lunar anomalies could possibly connect to aliens. So much of this discussion is premised upon a very limited human vision of the universe and how other intelligences would interact with or observe us.