Earthsky.org, 11/5/13, Deborah Byrd
The thing is, on every day of every week of every month of every year since the formation of the solar system, all those billions of years ago, there have been comets drifting around and passing Earth. They are always there, ALWAYS there, out in space. They’re as natural a part of our world as the planets, clouds and kittens. Astronomers who observe the sky don’t get excited about comets because there are so many of the damned things! It’s like a birdspotter getting excited about blackbirds, or thrushes.
