It's for poets and writers, and it's for everyone else. Furthermore, according to geology, we are probably here today because a comet collided with the earth 65 million years ago, destroying the dinosaurs. The origin of life probably comes from comets. Astronomy thus has to do with biology, and of course SETI, the Search for Extraterrestrial Intelligence, is as much about biology as astronomy. There are other areas that involve astronomy that have nothing to do with science at all.
Astronomy goes into everything.
It's quite a bit, but there is an observatory to house them all. It is about 12 feet wide and 32 feet long. It's been six years since he found a comet. But before that, he had discovered 21 comets. He also discovered a nova while he was doing research for his biography of Clyde Tombaugh.