A Drake Equation for Alien Artifacts
Centauri Dreams,
Jim Benford’s study of ‘lurkers’ — possibly ancient probes that may have been placed here by extraterrestrial civilizations to…
Jim Benford’s study of ‘lurkers’ — possibly ancient probes that may have been placed here by extraterrestrial civilizations to…
Jim Benford is continuing his research into the still nascent field known as SETA, the Search for Extraterrestrial Artifacts. A…
The Nature of the…
The Nature of the…