No, not some New Age bullshit. Just go away right now if that's what you're after. I mean sounds like talked about in these two cracked.com articles

http://www.cracked.com/article_18381_the-5-creepiest-unexplained-broadcasts.html

http://www.cracked.com/blog/7-bizarre-sounds-from-outer-space/

the earth sounds so EVIL. I love it.

So this thread is basically about NOISE that isn't made by man, but still can hold your interest I guess.