Talking about asteroids...I've been ruminating over something I'd like to submit to y'all:
Back in '58, Robert Heinlein had no idea of the damage done by a HUGE asteroid the bug slung into B.A. (from whereever!). I figure he figured it would be like a large Hiroshima or worse, with those new-fangled hydrogen bombs. By the time of the film, though, I think some maverick scientists were already talking about large meteor impacts wiping out the dinosaurs (and various other flora and fauna that had managed to survive to that point).
History Channel televised a fascinating show on dinosaur extinction (part of their Mega Disaster series?), with possible impact points around the Yucatan Peninsula and/or the Chesapeake Bay (as I'm looking out my window to ensure the Bay's still there!). They've found Iridium in core samples around the Bay, and theorize that the dust kicked up by the impact blotted out the sun long enough for vegetation to generally die out. They pointed out the weather effects of the large volcanic eruption in Indonesia in the early 19th century, which lead to snow in New York in June and the River Thames freezing solid. :!:
I guess that, if SST were to be re-written by "modern" scientific standards, the B.A. asteroid all but wiped out planet Earth and we're be fighting back from our new home in Sanctuary! :shock: