Yes it's amazing isn't it, I recall doing my first study of the solar system when in sixth grade for an end of year project to fill in the last week of school back in 1965
yes, scary isn't it.
Anyway I distinctly remember the books in the school library depicting the known surface of mars at the time with canals drawn all over it, you know the ones that the Martians had made to sail their boats along.
Binalongtime
Ken.