blog.orwen.org osobní názory, postřehy a nápady tak jak sem propadnou klávesnicí

Počet civilizací ve vesmíru

• "two communicative civilizations exist in our galaxy at any given time, on average, plus two hundred more that are not trying to communicate" -- en.wikipedia.org/wiki/Drake_equation
• "There are probably more than 170 billion (1.7 × 10^11) galaxies in the observable universe" -- en.wikipedia.org/wiki/Galaxy

Ve vesmíru je tedy asi 34 340 miliard civilazací.