Are we alone in the universe or is there intelligent life on other worlds? And if there was, but it’s no longer there, perhaps destroyed, which is why we haven’t made contact with anyone? And if that’s the case, how many civilizations were there and why did they all disappear? The subsequent questions would be […]
Civilizations
Posted inScience
The Silurian Hypothesis: Would it be possible to detect an advanced civilization in the geological record?
If an industrialized civilization had existed on Earth millions of years before our era, what traces would it have left, and could they be detectable today? That is the astounding premise that led Adam Frank, an astrophysicist at the University of Rochester, and Gavin Schmidt, director of NASA’s Goddard Institute, to write an article in […]
