Is It Time to Accept That We're Alone in the Universe?

We have yet to discover any signs of aliens, a troubling observation that has led to much speculation. One possible solution to the Great Silence is that nobody's out there. It's a conclusion that sounds impossible to believe, but there may be something to it. Here's why we may be alone in the universe. » 11/05/14 5:17pm 11/05/14 5:17pm

Why It's So Hard to Find Alien LIfe

A big reason why the Fermi paradox has punch is the matter of time. Max Tegmark gets into this in his excellent new book Our Mathematical Universe (Knopf, 2014), where he runs through what many thinkers on the subject have noted: Our Sun is young enough that countless stars and the planets that orbit them must have… » 2/14/14 11:00am 2/14/14 11:00am

How Space Heat Helps Us Hunt Down Alien Technologies

My colleagues and I have begun the Glimpsing Heat from Alien Technologies (G-HAT) SETI program, which has been written about here on Centauri Dreams and in other places, like in this nice summary article. I describe some of the foundations of the search here on my blog, but I have written up this short primer for … » 2/10/14 2:20pm 2/10/14 2:20pm

The True Story of the Hurricane Katrina Lightning-Laser Memorial and…

Joe Davis is telling me about his design for a 110-foot lightning-laser tower that will literally seize a hurricane's force, bottle it up and hurl it angrily back into the sky. It's intended as a memorial for the victims of Hurricane Katrina. Davis—whose official role at MIT is research affiliate associate in the… » 7/30/08 12:00pm 7/30/08 12:00pm

Allen Telescope Array Fully Operational; Set To Find Treacherous Space…

Paul Allen's SETI array was powered up yesterday. Currently with 42 6-meter dishes in operation, the final product will have 350 antennas (antennae?), capable in total of scanning over 1 million star systems in the hope of finding some kind of intelligent life out there. Since the Hat Creek, California, telescope… » 10/12/07 8:25am 10/12/07 8:25am