Tag: Fermi paradox

• How Many Aliens Are There? The Drake Equation and the Fermi ParadoxWe put real numbers into the Drake equation for the number of civilizations in the Galaxy, then sharpen the Fermi paradox using two figures: the time needed to colonize the Galaxy and the range at which a radio beacon can be heard.PhysicsCosmologyHigh school / generalDrake equationFermi paradoxExtraterrestrial intelligenceGreat FilterSETI~34 min