Where do birds go in the winter? South, of course. But centuries ago there were all kinds of theories. One of the more bizarre was that of English minister and scientist Charles Morton, who in the 17th century wrote a surprisingly well-reasoned paper claiming birds migrate to the moon and back every year. And Morton was even aware of how epic this journey would be. He estimated the one-way trip to be 179,712 miles (he wasn’t so far off — the moon varies between 226,000 miles and 252,000 miles away), and reckoned it would take the birds 60 days to reach our satellite flying at 125 mph.