Is this real stuff? My first reaction was that that must be fake. Somebody just composed some sounds effects, and is making fun of astronomy. I didn't succeed in finding any debunking for that though, from the internet, yet. Then I found this NASA site: http://www.nasa.gov/vision/universe/features/halloween_sounds.html It says: Oh... time to start believing? But when I listened to the sounds from the NASA site, actually they didn't sound the same as the sounds in the youtube... So I'm left slightly confused and unsure.