Have you ever wondered what happens at the center of a black hole? Is it simply a dense, hot core filled with crushed matter? Is there such a place as "the other side" of a black hole? If so, where does it lead?

Perhaps it serves a portal to one of many realms that comprise the so-called multiverse. Or perhaps, all that we have come to know as reality is nothing more than an elaborate hologram.

To gain insights into these awesome concepts in modern theoretical physics, I met up with Brian Greene, professor of physics and mathematics at Columbia University, co-founder of the World Science Festival in New York, and author of four popular science books. Watch the video above and/or click the link below to learn more. And don't forget to weigh in by leaving a comment at the bottom of the page. Talk nerdy to me!

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