After thirty-six years, NASA's Voyager spacecraft has finally left our solar system. It's the furthest a man-made object has ever been from space. And it's sending us back the sound of interstellar space. So what's that sound like, anyway?
A) spooky and B) windy:
While you've got your ears open, you should listen to Radiolab's very fantastic piece on Voyager at the edge of the heavens.