NASA Scientists Theory: What If We Aren't First Advanced Civilization on Earth?

https://www.zmescience.com/science/a-provocative-theory-by-nasa-scientists-asks-what-if-we-werent-the-first-advanced-civilization-on-earth/

7•bookofjoe•7mo ago

Comments

PaulHoule•7mo ago

See

https://www.pinterest.com/pin/gary-larson-why-dinosaurs-beca...

Sometimes I tell Mormon missionaries that Quetzalcoatl came to the Middle East after teaching Mexicans how to grow corn and that he's actually from a population of dinosaurs that crashed a space colony into the Earth like they did in the first Gundam series and departed for the Oort cloud.

bediger4000•7mo ago

I told the last missionaries at my door that I'd read "Under the banner of heaven" by John n Krakauer. Haven't seen one since.

andsoitis•7mo ago

> The Silurian Hypothesis asks whether signs of truly ancient past civilizations would even be recognisable today.

A hypothesis is a tentative explanation for an observation or phenomenon that is based on prior knowledge and can be tested by gathering and analyzing data.

Given that, is there something that we're unable to explain properly without invoking the Silurian Hypothesis? Asked another way: what does this hypothesis help with that is otherwise hard to explain?

drweevil•7mo ago

It helps by providing some context to how we think about detecting alien life, for one thing. The big question in that field is the Fermi paradox: If there is a high likelihood of extra-terrestrial life, why haven't we detected any signs of it yet? Understanding the evolution, characteristics, and lifespan of the only instance we know of could explain the paradox.

ahazred8ta•7mo ago

The Sahara desert is carpeted with stone tools made by prehumans. Those tools are still going to exist a billion years from now. There are mines and tunnels that will still be detectable. If someone made stone tools a billion years ago, we would be finding them now.

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