On the clearest night sky, you can see 2,500 stars.
But here’s the thing.
These stars are just in our Milky Way…this tiny bit of the Milky Way.
The Milk Way has 250 billion stars.
But we’re just 1 galaxy.
Guess how many galaxies there are.
The answer is 250 billion – meaning there are as many galaxies in the universe as stars in our galaxy.
Lemme repeat that.
THERE ARE AS MANY GALAXIES IN THE UNIVERSE AS STARS IN OUR GALAXY.
Still didn’t sink in?
Think of it this way.
Pick up a grain of sand.
For every grain of sand on Earth, there are 10,000 stars.
But it gets crazier.
1% of these stars have planets like Earth.
So 1 grain of sand = 100 Earths.
How’s that make you feel?
Well, buckle up…it gets gnarlier.
Because the Earth is a young planet – only 4.5 billion years young.
But most planets are old…
Like 8 billion years old.
Meaning they have a 3.5 billion year head start.
Can you imagine Earth in 100 years? 1,000 years? 1 million?
Now try 3.5 billion years…
However that future looks, one thing is certain: we’re traveling all over space.
See there are 3 levels of energy available:
(Don’t worry, I’ll get to the paradox soon.)
Right now, we’re on level #1 – close to using all the energy from our Earth.
The next level is using all the energy from our Sun – with something like a Dyson Sphere.
Then we’d use the Sun’s energy to send 2 human fleets to other stars – where we’d repeat the process.
If each replication took 500 years, we’d conquer a galaxy in ~3.5 millionyears.
3.5 millionyears = 1 galaxy.
The average planet is 3.5billion years older than Earth….that’s 1,000 times longer than the 3.5 million years needed for 1 galaxy.
Translation: Aliens should be all over the universe.
So this begs the question:
Maybe there’s hope for Gen Z.
Because you just discovered the…
The Fermi Paradox asks, “Where the hell are the aliens?”
There are 2 answers to Fermi:
We’re not alone
Let’s explore each.
1. We’re alone
We’re alone = no aliens.
Why are there no aliens?
Basically, there’s no life ‘cause something stops it….a Great Filter.
But the big question is: where’s the filter?
Or after us?
The answer is critical.
Before us = HOORAY 🥳
Because that means life is rare.
Aka every other life form never made it to our level. Our Earth had some special event that other Earth-like planets never had.
Top contenders are events that took a while — like billions of years.
Here are the top 2:
1. Life itself – Unclear how this happened but some think lightning zapped a molecular soup, creating life’s building blocks — like amino acids and nucleotides — which formed a cell that could self-replicate. This took 1 billion years.
2. Prokaryote to Eukaryote – One old bacteria ate another and told it to be the brain (nucleus). This took 2 billion years.
Some say the jump from semi-smart (monkey) to smart (human) is another leap – but it’s less convincing.
Regardless, this means you better hope we don’t find life on Mars.
Because if lame ass Mars can make life — especially complex life — we’re definitely not rare. So that’d mean the great filter is…