silver

I didn't even think of that. I just assumed 1951 (it's not that far into the past!) would have had a decent look at Venus, since we got into space by--uh, Gagarin went in 1961, just a decade later. I can't believe how much we've learned in about sixty years.

On the other hand, I doubt anyone expected the explosion of internet fifteen years ago, and that's within our culture. So.