Apparently it's not quite as smooth as a billiard ball. More like very fine sandpaper. https://skeptics.stackexchange.com/questions/10763/is-earth-as-smooth-as

Apparently it's not quite as smooth as a billiard ball. More like very fine sandpaper. https://skeptics.stackexchange.com/questions/10763/is-earth-as-smooth-as-a-billiard-ball https://skeptics.stackexchange.com/questions/10763/is-earth-...