Kip Thorne, a theoretical physicist and the executive producer of Chris Nolan's film, for first the time speaks of Interstellar. Though, he reveals nothing much about the film. Thorne, now retired, discusses his plans besides being busy with the film. Those who aren't yet aware, Thorne along with his friend/producer Lynda Obst conceived the premise of Interstellar, a scenario about the most exotic events in the universe suddenly becoming accessible to humans.

The following is the excerpt from Kip Thorne's interview with phys.org.

What are you working on now that you are retired?

I'm an executive producer of the film Interstellar, directed by Christopher Nolan and based in part on the science I've done during my Caltech career. Greater secrecy surrounds Interstellar than most any movie that's been done in Hollywood. I'm not allowed to talk about it, but let's just say that I've been spending a lot of my time on it in the last year. And I've recently finished writing a book about the science in Interstellar.

The other major project I'm wrapping up is a textbook that I've written with Roger Blandford [formerly a professor at Caltech; now on the faculty at Stanford]: Modern Classical Physics. It's based on a course that Roger or I taught every other year at Caltech from 1980 until my retirement in 2009. It covers fluid mechanics, elasticity, optics, statistical physics, plasma physics, and curved space-time - that is, everything in classical physics that any PhD physicist should be familiar with, but usually isn't. This week we delivered the manuscript to the copy editor. After 34 years of developing this monumental treatise/textbook, it's quite a relief.

I'm also working with some of my former students and postdocs on trying to understand the nonlinear dynamics of curved space-time. For this we gain insights from numerical relativity: simulations of the collisions of spinning black holes. But I've had to shelve this work for the past half year due to the pressures of the movie and books. I hope to return to it soon.

Interstellar opens everywhere November 7th.

• Tags: Interstellar, Christopher Nolan, Kip Thorne, Lynda Obst