What does the Universe sound like? From the sweep of a pulsar, to the deafening roar of our boiling sun this episode explores the undiscovered soundscapes of the solar system, the galaxy, and the entire cosmos. And, is it true that in space nobody can hear you scream?!? Our scientists reveal that there are places in the Universe that prove this sci-fi statement wrong.

• Neil deGrasse Tyson
• Lawrence Krauss
• Erik Thompson

• Michio Kaku
• David Brin
• David Ackroyd