Where Are All the Aliens? Probably Dead, Says a New Study

If the universe is so full of intelligent life, why haven't we found any? Because all the aliens are extinct, a new study says.

The number of stars in the universe is uncountable. The number of planets potentially even higher. Earth is just one small, pale blue dot orbiting a very average star. The probability that life is abundant in the universe should be high, yet we have located no undeniable signs of life beyond Earth. Read more