StarTalk Radio

Science, pop culture and comedy collide on StarTalk Radio! Astrophysicist and Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities and scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! New episodes premiere Friday nights at 7pm ET.

https://www.startalkradio.net/?sfid=22493&_sft_category=startalk-radio

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Cosmic Queries: Time-Keeping


It’s time for a new episode of Cosmic Queries, where Neil deGrasse Tyson answers fan questions about photons, tachyons, the speed of light, the physics of the universe and time itself.


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 2013-03-28  43m