We think we're the first advanced earthlings -- but how do we really know?

April 18, 2024, 08:33:46 pm

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Atlantis Online > Forum > Satellite Discoveries & Alternate Archaeology > Alternate Archaeology > We think we're the first advanced earthlings -- but how do we really know? > Message #269173

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Bringer of Rain, Thunder and Snow, an Undying Saga of Earth

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Re: We think we're the first advanced earthlings -- but how do we really know?

« on: April 21, 2018, 03:10:35 pm »

How do we really know there weren't previous industrial civilizations on Earth that rose and fell long before human beings appeared? That's the question posed in a scientific thought experiment by University of Rochester astrophysicist Adam Frank.
Credit: University of Rochester illustration/Michael Osadciw


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