<p>What are gravitational waves, and what can they tell us about our universe? In her first outing as StarTalk All-Star host, cosmologist Janna Levin untangles the astrophysics with help from LIGO co-founder Rainer Weiss and comic co-host Matt Kirshen.</p>

What are gravitational waves, and what can they tell us about our universe? In her first outing as StarTalk All-Star host, cosmologist Janna Levin untangles the astrophysics with help from LIGO co-founder Rainer Weiss and comic co-host Matt Kirshen.

Deciphering Gravitational Waves, with Janna Levin (Repeat)

"I’m Neil deGrasse Tyson, host of StarTalk Radio. I’ve recruited a crack team of scientists and science educators to help me bring the universe down to Earth. They are… The StarTalk All-Stars." New episodes premiere Tuesday nights at 7pm ET.

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Deciphering Gravitational Waves, with Janna Levin (Repeat)

Deciphering Gravitational Waves, with Janna Levin (Repeat)