Once again, if you need sources for research, please let me know, because I'd love to help with research. I was nearly 10 when Viking 1 touched down, and I haven't been the same since.

Thanks. I may take you up on that, though I have managed to assemble an impressive (and daunting) mountain of reference material. I myself was only 12 when Viking 1 touched down. For some reason, the event is inexorably linked in my mind with Elton John's "Rocket Man."