dyson sphere

10 Theoretical Megastructures, From Big To Massive

10 Theoretical Megastructures, From Big To Massive

For much of its modern history, science fiction has had a particular fascination with engineering, with authors and artists imagining fantastic, massive structures in the depths of space. Here are 10 of them, from incredibly large to unbelievably massive.

How Space Heat Helps Us Hunt Down Alien Technologies

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…