Studio 360 Published by Studio 360 The Science of Time Travel Listen 8 min Queue Download this audio Want to embed this player? Use the code below. More info. <iframe frameborder="0" scrolling="no" height="130" width="100%" src="https://www.wnyc.org/widgets/ondemand_player/wnyc/#file=/audio/json/108612/&share=1"></iframe> Share on Facebook Share on Twitter Email a Friend David Goldberg teaches physics at Drexel University. In A User's Guide to the Universe, he explains how time travel might be possible. He tells Kurt why the skeptics are wrong.