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10 Societies with Unconventional Concepts of Time
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10 Terrifying Ways to Take in the View
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10 Outrageous Acts Committed by Renaissance Popes
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Top 10 Acts of the Aussie Pop Music Invasion
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10 Incredible Scenes of Cosmic Violence
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10 Forgotten American Pastimes and Hobbies
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10 Legendary People from History Who Didn’t Exist
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10 Most Spectacular Objects Pulled from the Thames
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10 Valentine’s Day Cold Cases That Were Finally Solved
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Ten Peculiar Times That Scientists Tried to Talk to Animals
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10 Societies with Unconventional Concepts of Time
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10 Terrifying Ways to Take in the View
Who's Behind Listverse?

Jamie Frater
Head Editor
Jamie founded Listverse due to an insatiable desire to share fascinating, obscure, and bizarre facts. He has been a guest speaker on numerous national radio and television stations and is a five time published author.
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10 Outrageous Acts Committed by Renaissance Popes
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Top 10 Acts of the Aussie Pop Music Invasion
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10 Incredible Scenes of Cosmic Violence
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10 Forgotten American Pastimes and Hobbies
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10 Legendary People from History Who Didn’t Exist
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10 Most Spectacular Objects Pulled from the Thames
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10 Valentine’s Day Cold Cases That Were Finally Solved
Video: 10 Reasons We Still Haven’t Found Aliens
The Fermi paradox, first introduced by physicist Enrico Fermi, asks the question, “Where is everybody?” Or, more specifically, “Where are all the aliens?”
When we factor in the size of the universe, the number of Earth-like planets, and a range of other variables, there should be tens of thousands or more extraterrestrial civilizations in the galaxy. And with the galaxy being around 10 billion years old, scientists say that intelligent worlds would have had plenty of time to contact one another. So if aliens should statistically exist, why haven’t we encountered any yet? Here are some possible reasons.
Subscribe to the Listverse YouTube Channel, or read the original list here.
Discover more extraterrestrial encounters on Listverse:
10 Government Officials Who Admitted The Existence Of Aliens
10 Bizarre Claims Of Alien/Human Hybrids
10 Creepy Stories Of Alleged Alien Encounters
Top 10 Ancient Aliens Mysteries