The Fermi paradox or Fermi's paradox, named after physicist Enrico Fermi, is the apparent contradiction between the lack of evidence and high probability estimates, e.g., those given by the Drake equation, for the existence of extraterrestrial civilizations.

According to this line of reasoning, the Earth should have already been visited by extraterrestrial aliens.

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We didn’t know how many of those stars had planets that could potentially harbor life, how often life might evolve and lead to intelligent beings, and how long any civilizations might last before becoming extinct.” “Thanks to NASA's Kepler satellite and other searches, we now know that roughly one-fifth of stars have planets in “habitable zones,” where temperatures could support life as we know it.

So one of the three big uncertainties has now been constrained.” Frank said that the third big question--how long civilizations might survive--is still completely unknown.

In an informal conversation, Fermi noted no convincing evidence of this, leading him to ask, "Where is everybody?

" The Fermi paradox is a conflict between arguments of scale and probability that seem to favor intelligent life being common in the universe, and a total lack of evidence of intelligent life having ever arisen anywhere other than on the Earth.

They prove something very important to us, which is that those children can grow in different environments and survive and live a life in a place other than Earth.

Just studying the development of future post-colonial Martian generations unlocks a lot of secrets of how the human race can adapt to secondary data points other than Earth. To read Part II, titled The Case for Space Sex, you can read the article here. You’re in your 30s, you live in the year 2029, you just sold all your assets so that you can afford that one way ticket to the Martian colony. Do you think you’d be able to find a partner on Mars to live with?

The Drake equation is a thought experiment which aims to estimate the number of technologically advanced and communicative civilizations in the galaxy, and it has always been an enjoyable bit of nonsense.

It’s certainly fun and enriching to sit around concocting profound theories about the laws that govern the rise and fall of civilizations, but we can’t call the products of such navel-gazing scientifically solid.

This question--summed up in the famous Drake equation--has for a half-century been one of the most intractable and uncertain in science.