Monday, August 26th, 2019

Physicist Explains Why We Haven’t Seen Extraterrestrials Yet & It’s Not Good

Published on November 12, 2016 by   ·   No Comments

aliens

CollectiveEvolution

Let’s review just how small we are in comparison to the universe: for every grain of sand on every beach on Earth there are 10,000 stars, the Milky Way includes billions of Earth-like, potentially habitable planets. The Milky Way itself is only one of billions of galaxies, and we may be living in an infinitely-increasing number of universes, otherwise known as the multiverse. Given all of this, it is reasonable to assume that other life forms exist outside of our planet. In addition, Earth is a part of a fairly young planetary system, so it’s possible there are extraterrestrials out there that are far more advanced than us. This begs the question: where are all of the extraterrestrials?

This question was first addressed by Italian physicist Enrico Fermi in the 1950s when he asked, “If life is so abundant, why have we never heard from anyone?” More recently, Physics and Astronomy Professor at the University of Manchester, Brian Cox, attempted to answer this question, which is now commonly referred to as the Fermi Paradox. Unfortunately for us, Cox’s theory isn’t very optimistic for the human race.

What is the Fermi Paradox?

There are at least 500-quintillion (or 500 billion billion) sun-like stars out there, and keep in mind that that’s a very conservative estimate. A study from the Proceedings of the National Academy of Science suggests that at least 1% of the total stars in the universe have Earth-like planets orbiting around them, meaning that 100 billion billion Earth-like planets may exist.

For those of you who are sceptical about extraterrestrials, let’s make a conservative estimate that after 1 billion years of existence, only 1% of these Earth-like planets develop life. To help you visualize this, that would be the equivalent to every single grain of sand on Earth representing one planet with life on it. Even if only 1% of that number developed equal intelligence to humans, that would mean there are 10 million billion intelligent civilizations in the universe.

If you scale these numbers down using the same estimates to predict how many intelligent civilizations exist in the Milky Way, you’d get 1 billion Earth-like planets and 100,000 intelligent civilizations in our galaxy alone.

So, I ask you this: Do extraterrestrials exist and if so, why haven’t they contacted you? Welcome to the Fermi Paradox!

Potential Explanation 1: Physicist Brian Cox’s Theory

Physicist and Astronomer Brian Cox was the latest to address the Fermi Paradox in a recent interview. Although his outlook is relatively pessimistic, it is still a very real possibility. Cox says, “One solution to the Fermi Paradox is that it is not possible to run a world that has the power to destroy itself and that needs global collaborative solutions to prevent that.” He continues, “It may be that the growth of science and engineering inevitably outstrips the development of political expertise, leading to disaster. We could be approaching that position.” (source)

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