The Edge of the Sky #293

November 28, 2014

This week we're talking about the mindbending science trying to understand the inner workings of the Universe. Astrophysicist Ethan Siegel returns to discuss the BICEP2 experiment, and its search for the fingerprints of cosmic inflation. And we'll talk to theoretical cosmologist Roberto Trotta about his book "The Edge of the Sky: All You Need to Know about the All-There-Is," which explains the history and concepts of cosmology using the 1,000 most common words in the English language.


  • Ethan Siegel
  • Roberto Trotta

Guest Bios

Ethan Siegel

Ethan Siegel is a theoretical astrophysicist and professor at the Lewis and Clark College in Portland, Oregon. He has previously taught at the University of Portland, the University of Wisconsin, and done astrophysics research at the University of Arizona. He writes the blog Starts With A Bang on Forbes and on the Medium network. He is also the author of the book "Beyond the Galaxy: How Humanity Looked Beyond Our Milky Way and Discovered the Entire Universe".

Roberto Trotta

Roberto Trotta is an astrophysicist at Imperial College London, where he studies dark matter, dark energy, and the early Universe. After earning a PhD at the University of Geneva, he was the Lockyer Fellow of the Royal Astronomical Society at Oxford University before being appointed as a lecturer at Imperial College. He has published more than fifty scientific papers, contributed to two books, and received numerous awards for his research and communication of science.

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