![Profile Image](https://pbs.twimg.com/profile_images/1310258940081516545/S63u1Vr6_normal.jpg)
StarTalk @StarTalkRadio
🚨NEW EPISODE ALERT🚨 What type of time travel is used in A Christmas Carol? @neiltyson and comic co-host @chucknicecomic answer fan questions on time travel, paradoxes, and wormholes with theoretical physicist, @bgreene. https://t.co/Tv7SO6rAes — PolitiTweet.org