Big Bang

ESA and the Planck Collaboration

Close your eyes, press the play button and travel back 14 billion years in time.

That’s the sound of the Big Bang, in high fidelity.

“It sort of sounds like what an airplane sounds like flying over your house in the middle of the night,” says University of Washington physics professor John Cramer who recreated the sound using cosmic microwave data. “A very low frequency that sort of builds up them falls off again.”