Is the universe barren or teeming with life? The observable universe; the part of the universe from where the light has had time to travel to earth is approximately 90 billion light years in diameter. There are 20 billion sun-like stars in just our Milky Way galaxy and recently we learned that planets are much more common than we thought. Those are the planets which are situated within the goldilocks zone of its home star, where the temperature is just right for water to remain in liquid state and perfect for life to flourish. Our current observational statistics has shown that a fifth of every sun-like star has an earth sized planet in its habitable zone. Even if only 0.1 percent of those planets contain life, there should still be few million
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This is the Fermi-Paradox. Perhaps it is very hard for complex life to develop. We still haven’t completely figured out how life originated on earth and possibly the perfect conditions required rarely gets established in the universe. The early universe might have been very hostile and only recently have things cooled down for life to flourish. This would mean that humans are rare and among the first advanced civilization, if not the only civilization to have ever existed. Possibly life on current level on intelligence exists everywhere in the universe but will get terminated once it reaches a certain point. Two of the popular hypothesis proposed are as follows; One: A super advanced technology meant to solve all the problems of a civilization will end up destroying it. This will be like a disaster movie where every civilization’s last words will be, “This technology will solve all our problems.” Before they perish. Two: There is a type-III civilization out there that monitors and regulates the galaxy and once a civilization is advanced enough, it gets …show more content…
Space travel is an enormous challenge. An immense amount of materials need to be lifted to orbit and constructed. A typical journey between stars last a few thousand years. The crafts need to be capable of sustaining life for the entire journey and should be able to start an entire civilization from scratch once it reaches its destination. Also, the planet might even not be habitable as it seemed from afar. Most civilizations die off before being advanced enough to attempt the journey and even those that do may not survive it. It is very possible that there were intelligent civilizations that spread over many star system we might have just missed them. Almost 99 percent of all species that ever lived on earth have died out, it is easy to see why humans might as well. Perhaps that is the fate of every intelligent life form, once they are advanced enough they might spread over some distance but eventually die off and so no galactic civilization will meet each other. Somewhere in the universe there are grand ruins of some other ancient civilization but we will never reach it. So maybe, this feeling of “Where is Everyone?” is one thing all life in the universe
This is the Fermi-Paradox. Perhaps it is very hard for complex life to develop. We still haven’t completely figured out how life originated on earth and possibly the perfect conditions required rarely gets established in the universe. The early universe might have been very hostile and only recently have things cooled down for life to flourish. This would mean that humans are rare and among the first advanced civilization, if not the only civilization to have ever existed. Possibly life on current level on intelligence exists everywhere in the universe but will get terminated once it reaches a certain point. Two of the popular hypothesis proposed are as follows; One: A super advanced technology meant to solve all the problems of a civilization will end up destroying it. This will be like a disaster movie where every civilization’s last words will be, “This technology will solve all our problems.” Before they perish. Two: There is a type-III civilization out there that monitors and regulates the galaxy and once a civilization is advanced enough, it gets …show more content…
Space travel is an enormous challenge. An immense amount of materials need to be lifted to orbit and constructed. A typical journey between stars last a few thousand years. The crafts need to be capable of sustaining life for the entire journey and should be able to start an entire civilization from scratch once it reaches its destination. Also, the planet might even not be habitable as it seemed from afar. Most civilizations die off before being advanced enough to attempt the journey and even those that do may not survive it. It is very possible that there were intelligent civilizations that spread over many star system we might have just missed them. Almost 99 percent of all species that ever lived on earth have died out, it is easy to see why humans might as well. Perhaps that is the fate of every intelligent life form, once they are advanced enough they might spread over some distance but eventually die off and so no galactic civilization will meet each other. Somewhere in the universe there are grand ruins of some other ancient civilization but we will never reach it. So maybe, this feeling of “Where is Everyone?” is one thing all life in the universe