Life in the Universe #2: Where Is Everybody?

Given that our galaxy is 10 billion years old and it should take civilizations much less time to develop and travel through the galaxy, why isn't the universe teeming with aliens? Where is everybody?

242.5k Views | Published on 20th Jul, 2009

Given that our galaxy is 10 billion years old and it should take civilizations much less time to develop and travel through the galaxy, why isn't the universe teeming with aliens? Where is everybody?