most people cannot grasp the enormity of our galaxy let alone the universe. Mathematics is important here, if "tricky numbers" make sense, you're Polly not sitting out side on a cold night waiting for visitors to sneak down to make crop circles.
Suppose the sun were the size of a smallish grapefruit. At that scale Alpha Centari would be 1800 miles away. The center of the milky way galaxy would be 12,000,000 miles away. The moon, the farthest humans have been, is about an inch away.
It’s a great big universe
And we’re all really puny
We’re just tiny little specks
About the size of Mickey Rooney.
It’s big and black and inky
And we are small and dinky
It’s a big universe and we’re not.