Ah, yes, 420. I seen something exactly like that a couple years ago. If this were true, then the possibility of life existing elsewhere is less of a possibility and more of a probability. Well, it was to begin with, but even more if this were true. The reasoning being, if something outside of earth, brought what was essential for life on earth, to earth, then the likeliness of other places having these things already, especially with it coming from elsewhere to begin with, is practically undeniable.
Hmm, if I ever notice it or something on tv or hear about it, I'll "go out of my way," so to speak, to watch it. Sounds good. Though there is a good possibility I've seen it before, I've watched many things on subjects like these, and the name sounds extremely familiar.