Sentences with phrase «industrial civilization exist»
«Now, I don't believe an industrial civilization existed on Earth before our own — I don't think there was a dinosaur civilization or a giant tree sloth civilization,» said Adam Frank, an astrophysicist at the University of Rochester and a co-author of a new study on the topic.
https://www.washingtonpost.com/ Not exact matches
Or, as the paper put it: «If an industrial civilization had existed on Earth many millions of years prior to our own era, what traces would it have left and would they be detectable today?»
From railroads and airlines to military weapons and industrial conglomerates, the industrial sector makes it possible for modern civilization to exist.
This raises the possibility that industrial civilizations might have been around long before human ones ever existed — not just around other stars, but even on Earth itself.
In contrast, complex life has existed on Earth's surface for only about 400 million years, and humans have developed industrial civilizations in only the past 300 years.
In doing so, they also lay out evidence of what might be left behind if industrial civilizations like ours existed millions of years in the past.