Look at the sky I see an unknown object flying by
Oh! no. This is giant. Maybe an alien space ship is flying over the city
This seems to be a flying saucer moving with tremendous speed
I saw aliens in real life
They are huge in size with large head
Enough of this
Let's keep it upto here
Hey views. Welcome to my video
I think you all have clearly guessed
about our topic of today's video is going to be on aliens and UFO
So
Do aliens really exist?
What about the truth behind UFO clips and alien abduction cases?
Where are all the aliens?
Did aliens landed on the ancient Egypt?
Is Area 51 hiding aliens?
What is Fermis's Paradox all about?
Does Drake's equation solve the total number of intelligent alien civilizations of our galaxy?
How are the alien civilizations?
Is the great filter a reason why aren't we seeing aliens?
Why couldn't we communicate with them?
Or how close are we to find those extraterrestrials?
If these questions are spinning in your mind you are in the right video to get started
Let's figure it out now
Starting with the basics
what is alien and UFO?
Aliens are those who are not from our own planet, Earth
or any other living beings from other planets
or any extraterrestrial beings
On the other hand UFO refers to the abbreviation of the word Unidentified Flying Objects
that can be either alien space crafts or any other strange and unknown man made flying objects
let us go into our main topic now
Aliens and UFO are main interest of people from a long time
We usually see many clips of UFO on youtube
And onetime hear many stories of alien abduction cases
But 99 percent of these videos are fake
and only meant for becoming popular and seeking off people's interest
or just an illusion from natural event
You can notice them if you judge it to perfection carefully
The remaing 1 percent is somewhat real
or contains valid points
actually goes to the researchers
and they are not revealed as often
If revealed we only get a slight chance of knowing the actual things
as these clips are hard to fing out
moving things further to Egypt
We have some interestring things to look at
some ancint drawings of Egypt suggest that
aliens landed on Egypt about 6000 years ago and are responsible for their advanced development as a civilization
according to the ancient narrators
Look at these pictures
They look like alien space ships. Right?
But the researchers failed to provide a proper explanation regarding it
whether is it just a cultural thing or space ship
same goes with area 51
no clues or proofs have been found out that the aliens are hidden there
Loosing your hopes?
Don't worry
Now is the time for revealing real time possibilities about aliens?
We live on earth, a planet with ugh water and accurate distance from the sun to support life
The universe is very large
It contans millions of galaxies
and a galaxy contains billions of stars
In star systems here are thousands of planets to support life
Some may contain intelligent life as well
But why couldn't we communicate with them?
We normally look for radio signals from the space
But if aliens are so advanced and technologically developed
they may find radio signal emission as backdated technology
and maybe using some other ways for communication
Think of using morse code in 2018
You are sending signals but nobody is receiving or answering to it
The technological limitation might be a reason why we aren't able to establish commutation with them
Moving things further let us get introduced to drake equation
in 1961 Frank Drake established this equation to estimate the the number of intelligent alien civilizations
Let us concentrate specially on our own milky way galaxy
As anything beyond our own local galaxy cluster is not imaginable to us
as the dark energy is expanding the universe and moving things further
Her's the equation
N means number of civilizations in the milky way galaxy to which communication is possible
R* means average rate of star formation in 1 year
fp means fraction of stars with planets
ne means number of planets that can support life
fl means fraction of planets that can go on to support life
fi means fraction of planets to support intelligent life
fc means fracction of life that can develop communicable technology
L means length of time to realse detechtable signals to space
as the value of the actors are variable
the result changes according to the change of each factor
the range varies from 1000 to 100 million alien civilizations
according to the kardeshev scale
Civilizations are classified into 3 types
Thsese are Type 1, type 2 and type 3 civilizations
in type 1 civilizations
the living beings can util 100 percent utiization of the available planetary resources
wheres humans of the earth can make only 0.73 percent of the available planetary resources of the earth
again type 2 civilization can make full utilization of the energy of it's own star
A type 3 civilization is called a glactric civilization and can colonize the entire galaxy
After all these thing the question comes
Where are all these aliens?
This is the Fermi paradox
If you don't know
A paradox is a proposition
which can be acceptable with some reasonings but
leads to logically impossible events
and nobody has a answer to it
the Fermi Paradox was proposed by Enrico Fermi
One possible answer to it maybe the great filter
To make thing simple
it is such a barrier which is hard for a life or civilization to overcome
for example
let's think the filter was behind us
then it may indicate that
it is very hard for life to develop and evolution of species to take place
however bacteria can servive in extreme conditions
agaiin let us think the filter is ahead of us
then it may indicate that civilization can exist only upto a certain limit
The cause maybe nuclear wars
highly advanced technologies to solve problems
and if activated they can destroy everything
and the civilization is doomed
advanced super intelligent AI
or climate change
If this is the case we may have hard times finding aliens even with advanced technologies
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