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A little bit, actually, yes. In a paper published in the May issue of the journal Astrobiology, the astronomer Woodruff Sullivan and I show that while we do not know if any advanced extraterrestrial civilizations currently exist in our galaxy, we now have enough information to conclude that they almost certainly existed at some point in cosmic history.
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Adam Frank is an astrophysics professor at the University of Rochester, a co-founder of NPR’s 13.7 Cosmos and Culture blog and the author of “About Time: Cosmology and Culture at the Twilight of the Big Bang.”
Quote:
A little bit, actually, yes. In a paper published in the May issue of the journal Astrobiology, the astronomer Woodruff Sullivan and I show that while we do not know if any advanced extraterrestrial civilizations currently exist in our galaxy, we now have enough information to conclude that they almost certainly existed at some point in cosmic history.
Quote:
Adam Frank is an astrophysics professor at the University of Rochester, a co-founder of NPR’s 13.7 Cosmos and Culture blog and the author of “About Time: Cosmology and Culture at the Twilight of the Big Bang.”