Brian Cox explains
Let's review just how small we are in comparison to the universe:
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:
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 (Prevalence of Earth-size Planets Orbiting Sun-like Stars) 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 skeptical 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:
Welcome to the Fermi Paradox!
So, Which Explanation Is Correct?
I believe there is truth within each of these solutions.
Ultimately, our egos are our greatest enemies and we could end up destroying ourselves; however, I believe we are experiencing a shift in consciousness, and as a result, the possibility of this happening is decreasing.
I believe life in and of itself is a miracle, so we've probably passed the Great Filter, but I think other civilizations have as well due to the significant evidence in support of UFOs and the existence of ETs.
It's no secret that the U.S. government has tried to hide this from the public, but perhaps that's a good thing. Maybe we aren't ready to contact ETs regularly until we reach a higher state of consciousness, access higher dimensions and become a more intelligent civilization.
No matter what you believe, the Fermi Paradox is clearly a subject that merits further research and discussion!
I'll leave you with this video to let you think of the other possibility, that we have seen...