The Fermi Paradox — Where Are All The Aliens? (1/2)
The universe is unbelievably big – trillions of stars and even more planets. Soo… there just has to be life out there, right? But where is it? Why don't we see any aliens? Where are they?...
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Are we the only living things in the entire universe?The observable universe is about 90 billion light years in diameter.There are at least one hundred billion galaxies, each with one hundred to one thousand billion stars.Recently, we've learned that planets are very common too.And, there are probably trillions and trillions of habitable planets in the universe.Which means, there should be lots of opportunity for life to develop and exist.But where is it?Shouldn't the universe be teaming with spaceships?Let's take a step back.Even if there are alien civilizations in other galaxies,there's no way we'll ever know about them.Basically, everything outside our direct galactic neighborhood,the so called "Local Group"...
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Are we the only living things in the entire universe?The observable universe is about 90 billion light years in diameter.There are at least one hundred billion galaxies, each with one hundred to one thousand billion stars.Recently, we've learned that planets are very common too.And, there are probably trillions and trillions of habitable planets in the universe.Which means, there should be lots of opportunity for life to develop and exist.But where is it?Shouldn't the universe be teaming with spaceships?Let's take a step back.Even if there are alien civilizations in other galaxies,there's no way we'll ever know about them.Basically, everything outside our direct galactic neighborhood,the so called "Local Group"...
