Our Universe

Our Universe

Date

HostArt Bell

GuestsSean Carroll

Art spoke with physicist Sean Carroll about the origin and nature of the universe we live in. Carroll discussed the Big Bang, a scientific theory which proposes the universe came about from a tremendously dense and hot state about 14 billion years ago. He provided evidence for this theory, pointing out that the Big Bang model has been "established beyond reasonable doubt."

Carroll covered other cosmological and theoretical physics topics, including the accelerating expansion of the universe, how space and time came into existence, 'quantum gravity,' parallel universes, string theory, and time travel. He also talked about the recent discovery of an Earth-like planet orbiting a red dwarf star 20 light-years away from our solar system. Carroll said it was unlikely there would be the kind of life there that we could find by using radio telescopes.

Bumper Music:

Last Night

Haunted Tales / Open Lines
Haunted Tales / Open Lines
Writer Mark Leslie discussed his love for the more bizarre book genres and shared true tales of spooky events, including updates from his work on haunted hospitals, schools, and post offices. Followed by Open Lines.
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