This is wacky. I’m sitting in a meeting & surfing with some small fraction of my attention bandwidth, surfing NASA’s Cassini site, and came across this press release about Iapetus, one of Saturn’s moons.
As if Iapetus wasn’t weird enough before, what with having the leading hemisphere completely black and the trailing hemisphere completely white, now it also has a seam? When I was a kid I had model globes of the earth, the moon, and the night sky like that too, with a seam at the equator. Hmmm… coincidence?
Actually I have an explanation: in the Star Trek episode (original series, of course) For the World Is Hollow and I Have Touched the Sky, the Enterprise comes across an asteroid on a collision course (natch) with a Federation planet. The asteroid turns out to be hollow and actually a generation ship called Yonada.
Yonada, Iapetus… I think the facts speak for themselves.