Go to https://brilliant.org/IsaacArthur/ to get a 30-day free trial + the first 200 people will get 20% off their annual subscription. The cosmos seem silent and empty of any great interstellar empires, but perhaps they once existed, and if so, what titanic ruins...
Dinosaurs once ruled the world, and scifi often speculates they may have been a technological civilization that was wiped out. Is there even a small chance this is true, and if so, wiped out by what and who? And could we even tell? The Silurian Hypothesis:...
Continuing our look at possible alien civilizations, we examine extinct alien civilizations and the possibly of finding them and exploring their ruins to learn about them. We will also contemplate the possibility of bringing them back, and the conundrums that raises....