Strange Apocalyptic Sounds Coming From The Sky Occur Worldwide [Video]

There's been some really strange apocalyptic sounds coming seemingly from the sky that are occurring around the world. No one can figure out what is making the sounds, or where they're REALLY coming from!

Scientists say it's not coming from within the Earth. Astronomers say it's not coming from space...So where, or WHAT is it coming from???

I know the video is a bit long, but it's SO fascinating! As one person in the comments section on the video said, "Maybe after so many years of us sending sounds out to the universe that's a response."

The strange sounds start at 1:22