Podcast: StarTalk Radio
Episode: William Shatner Has Questions for Neil deGrasse Tyson
Here’s a list of all the books mentioned in this episode, complete with an Amazon buy link and quotes from the episode.
Harlan Ellison's The city on the edge of forever (teleplay)
Buy on Amazon"So if memory serves, that was The City on the Edge of Forever, which was a famous story by Harlan Ellison, a famous science fiction writer."