Sunday, December 2, 2012

Join me on Shindig for an online interactive discussion

On Thursday, December 6, from 3:00 to 4:00 pm EST I will be conducting a live interactive discussion on Shindig about Edge of the Universe and cosmology.   It will be your chance to ask me  questions about dark matter, dark energy, the holographic principle, time travel, dark flow, black holes, the fate of the cosmos, or anything else you've ever wondered about the universe.  Join me with your text or video questions! 

Paul Halpern on Shindig

Sunday, October 7, 2012

Edge of the Universe: New Book Review

"What an astonishing astronomy/science book – I was virtually blown away by the staggering amount of useful information I could find in it, I was utterly lost for words! Paul Halpern truly does a magnificent job in presenting us -in simple funny ways- the latest 'trends' from the fields of physics and astronomy!"

-Book Review by Xenonisis

Best New Nonfiction: Edge of the Universe

"A wonderful new book on the cosmos out by acclaimed science writer and physicist Dr. Paul Halpern. This is a “gotta-have!” Recommended. –D. L. Keur, The Deepening (Book Review)"

Monday, August 20, 2012

The Phantom Energy Menace: Is the Cosmos Doomed to a Big Rip?

What does phantom energy, a possible candidate for the hidden agent accelerating the universe, mean for the future of the cosmos?  Is the universe fated to be torn into shreds?  Read my latest contribution to NOVA's The Nature of Reality Blog

Sunday, July 15, 2012

Wormholes as Time Machines

Is backward time travel possible?  Can you change the past?  My latest post for NOVA's The Nature of Reality blog explores the idea of using traversable wormholes as time machines:

Wormholes as Time Machines

Saturday, June 2, 2012

The Mystery of Dark Flow

What is dark flow? My inaugural post for NOVA's "The Nature of Reality" blog describes the recent discovery that hundreds of galaxy clusters are moving at about two million miles per hour in the direction of a patch of sky between the constellations Centaurus and Vela.

Dark Flow: Tugs from Beyond the Observable Universe?

Sunday, May 6, 2012

Edge of the Universe: A Voyage to the Cosmic Horizon and Beyond

I'm delighted to announce that my new book, "Edge of the Universe: A Voyage to the Cosmic Horizon and Beyond," an exploration of cutting-edge cosmology, is now available for preorder.

Preorder on
Preorder on

More information about the book is at:

Edge of the Universe