For thousands of years mankind has questioned the existence of extraterrestrial life in our universe
Sooner or later. We're going to see some kind of signs of extraterrestrial life. We need to prepare
The chances that aliens exist in some form is highly probable
I think it's entirely likely that there's intelligent life somewhere in the universe
Today astronomers are already sending messages into space
But what if these messages are perceived as threats and aliens believe humans aren't the enemy?
If they arrived as conquerors it could be the end of planet Earth as we know it is an invasion
Is an invasion inevitable?
It would be like Godzilla meeting Bambi
Think is almost a hundred percent chance that there are alien forms of life in the universe other than our own
If extraterrestrials exist they would come from the far edges of the universe
They're fast spacecrafts may already be enroute to our world and there is no way to know when they will arrive
Many think that this scenario is possible including researcher Nick Pope who has worked with the British Ministry of Defence
to investigate UFO sightings
There's no reason why intelligent extraterrestrials couldn't already have started their journey it could be a
Year's time it could be a month. It could be a week. They could arrive later today
There's no way to determine whether they would come in peace or what their intentions would be
Extraterrestrial contact with our planet would change life as we know it
Nothing would ever be the same
Did you go ah ah so please if the arrival of extraterrestrials could mean extinction for the human race
It's impossible to know exactly what would happen but scientist Ben Bohr thinks it comes down to two basic principles
Came here, they would be coming because they were curious or because they were unfriendly
Our earth is just a mere speck in a massive universe
Statistically scientists believe that this may mean that there could be millions of other civilizations like ours out there
The Earth orbits the Sun just like seven other planets
But our son is not unique
It is only one of more than 100 other billion bright stars in our galaxy
the Milky Way
And even the Milky Way is just one of a trillion more galaxies
The universe is a very big place, and if you're talking
something on the order of a trillion
galaxies
each with half a trillion stars
It seems like a fairly silly notion to imagine that we're alone in the cosmos
Some scientists believe there's only a matter of time before aliens finally reach earth
They might be closer than ever before
If there is life intelligent life other civilizations in our small part of the galaxy we will find them in
In just half a dozen years or so
Does life exist in space the answer might lie within Earth's closest neighbor the planet Mars
Located over 34 million miles from Earth researchers speculate that Mars is a planet that could support
extraterrestrial life in this infinite universe the chances are that the same chemical
Processes that gave rise to life will have arisen many many times
Elsewhere one place that we might find life is within our own solar system
There are suggestions for example that there's microbial life on Mars
In 2003 ISA sent the Mars Express probe to the Red Planet
Its mission find water the basic substance of life on Earth
The images from the Mars camera showed something remarkable deep valleys that cut through the Mars Rock at one point in time
Water must have blowed here
and in some Mars craters scientists abound frozen water
There are even entire glaciers capping the poles of Mars, but that's not all
We see images of riverbeds even the image of an ocean so we do know that Mars was once
Tropical it was once lush
Scientists have been able to retrace the entire history of Mars
Four billion years ago a gigantic sea covered 1/3 of the planet this water would have been enough to support
microorganisms except suddenly the climate changed
For some reason was lost its atmosphere and cooled down and water
evaporated or became frozen within the surface soil
It may have had life in the past
But if just a small amount of liquid water is still present there is still hope for life on Mars
a
Recent promising sign strange grooves on the slopes of Mars
These features can occur when water liquefies in the soil and rock slides back over it
Hiding under the barren surface of this planet there might still be liquid water water that could mean life
Except on Mars temperatures can drop as low as minus
121 degrees Fahrenheit with no atmospheric protection
Dangerous cosmic rays can directly strike the planet's surface is it even possible for life to survive in these conditions
To discover
Extraterrestrial life to find out that we're not alone in the cosmos. It would be one of the biggest if not the single biggest
discovery of all time
Extraterrestrial arrival would be a sudden and shocking event
No one would be ready our
Vulnerable planet could be attacked by hostile invaders
If there was an alien spacecraft
coming into our solar system
We may only have a few days or weeks warning. They are very hard to see
To answer the age-old question of existence of life on Mars
Scientists take a deeper look at a continent on Earth that can mimic Mars. Icy climate
Antarctica
Researchers from the German Aerospace Center are looking for extremely feel like organisms microorganisms that can handle the harshest cold
They find
cyanobacteria micro fungi and lichens
Tiny creatures that can still survive at temperatures as low as negative 58 degrees
It's team Afyon organism and Saigonese extremophile ik or ghen isms clearly show us that life can exist in the most unbelievable places
We find life in the most extreme locations on our planet, so why shouldn't organisms also exist on Mars
Which is also an ice cold desert?
At his lab in Berlin
jean-pierre devera needs to test whether these organisms from Antarctica can cope with even more extreme conditions
He has designed a special Mars simulation chamber to put the mosses and bacteria to the test
This is our Mars chamber. We've made it as close as possible to the condition of Mars these temperatures
Go extremely low negative 58 to negative 103 degrees Fahrenheit
To match the paper-thin atmosphere on Mars the pressure is dropped to 6 millibars air on earth contains less than
1% carbon dioxide the air in this chamber is almost
96 percent carbon dioxide under these conditions most earthly creatures would immediately
Perish but the extremal philic organisms from antarctica survived
So far what I've discovered in the Mars chamber has been very surprising
even under the Mars conditions the fungi could form proteins and
Bacteria still produced methane these algae and lichen could still be able to carry out
Photosynthesis even under Mars conditions for this reason we want to take the next step we need to do these same tests in space
To assist with this study the International Space Station is called into action for this unique experiment with a risky setup outside
The astronauts assemble an experimental lab on the external surface of the space station several hundred samples
Including the bacteria fungi and mosses will be exposed to cosmic radiation orbiting the earth for over a year
If these organisms can survive in space they may also have managed to survive on Mars
Leave mouth-to-mouth control life can exist on Mars based on the experiments. We've done
It's clear that today's Mars is a viable planet I believe we need to seriously look for life on Mars
Proving simple life exists on Mars would tremendously fuel the greater discussion about intelligent life
Ours will be the generation that makes this
literally
Game-changing discovery that alters everything we know about ourselves and our place in the cosmos
But others in the cosmos may be trying to find our world
Chuckles catfish was ultra fun
There is no way to anticipate where they would land their arrival would shock humans
Muskan assistant
They friendly or not who knows I would hope they're friendly and that first contact would be in a friendly fashion
Humans need to find proof of extraterrestrial existence before they make contact
March 14th 2016
At the Russian Space Station in Baikonur, they are launching another new project to find out even more about Mars
ExoMars is a joint project of the European Space Agency ISA and the Russian space agency
Roscosmos
The mission is monitored via Isis control center in Darmstadt flight director Michelle doonie makes sure that the probe stays on course
You know that ExoMars mission is to find traces of life on Mars
That could be life that used to exist or maybe even still exist today
Since on earth
Methane is mostly produced by living things the trace gas orbiter is designed to detect methane and then find the source of the gas
well
a methane on Mars might be generated by volcanoes
We believe that those volcanoes are now extinct so it could be produced by minerals, or it could be created by living organisms
In the next phase of the mission a Rover will land on Mars
Since cosmic radiation makes the surface itself to hostile for life-forms
The rover will search for life in the ground protected from lethal radiation under the surface microbes could still be alive
This is the first time in history that a Mars rover will drilled two meters deep into the planet
If you own the home for fund a prohormone Dunois the deeper we drill the further we can go back in history
Increasing the chances that we will find life
Look how we dispose
The soil samples are examined immediately at the site a special set of instruments onboard the rover
analyzes the drill cores for traces of life
But even after all this effort there is still a chance that Mars may actually be a dead planet
There are still other potentially habitable worlds the two moons orbiting Saturn Titan and Enceladus
Could hold wife in the ice that covers them
Gas giant Jupiter also has its own ice modes
Ganymede and Europa underneath their ice crusts. They may have oceans of liquid salt water, which could be teeming with life
Phoenixon I think on our next I'd candidates are still in our solar system
We definitely want to look for life on the ice moons
One of these moons is very active and we can tell that it is spurting out ocean material. That's exactly what we want to see
Something's coming out of the ocean there could be life in that material
Future missions could finally reveal if there is life in our solar system
Unless highly developed
extraterrestrials discover us first scientists believe they could reach our planet a
Species that had evolved four million years longer than as the certainiy have the capabilities to send a starship here
Could these visitors be dangerous
What comes up doesn't get a coach was not popped on demo day
This fast
That's good, you're very busy
What would son should advanced species want from us
If aliens decided to conquer our earth would we even stand a chance?
If they arrived as conquerors it could be the end of planet Earth as we know it
If
Extraterrestrials arrive, they will have travelled a great distance from a planet that is very far from our solar system
How do we identify where they will come from?
One man is getting closer to the answer
Swiss astronomer Michelle my or is on his way to an observatory in France
It was here in 1995 that he made a breakthrough discovery
Luverne UEC we have come here to the observatory of Hawker Falls to measure as many stars as possible in the clear sky
In just his first week mayor was able to pinpoint
142 stars and there something very peculiar about one of them star 51 pegasi seemed to be moving a
Small strange wobble that made him think that it could have a planet in its orbit
Looking at them from Earth most stars appear to have a steady even speed
So we have noticed that 51 pegasi we actually changed its speed in a very specific way
Mayor has a theory the gravitational pull of this star holds unto a planet
But the planet itself is tugging back causing the star to also make the small movement
Astronomers call this a change in the radial velocity
Which causes a shift in the way the light of the star reaches us back on earth as it moves forward?
It is seen as bluish as it moves back. It is perceived as red
May or checks these tiny deviations in the light spectrum with his spectrograph
Mer is positive
51 pegasi must have a planet
This was our proof that there was a planet orbiting the star
For the first time ever an
Exoplanet has been identified a planet outside our solar system the newly discovered planet is located in the constellation
Pegasus 50 light-years away from Earth and it's been given a name 51 pegasi B
The idea upon EF this was the first time that we found a star other than our Sun that actually has a planet
the discovery of 51 pegasi B is a major milestone in space exploration
We now know for certain that exoplanets exist outside our solar system
The discovery also is another reason. Why many scientists are convinced?
extraterrestrials exist including well known theoretical physicist Michio Kaku I
Think is near a hundred percent that we will find intelligent life in the universe
To any planets have the potential to support not just simple life forms with the development of whole civilizations
Could there be a second earth a planet exists with the same characteristics as our own
Three two engine start one zero and liftoff of the Delta 2 rocket with Kepler
In 2009 the Kepler telescope was launched into space
The telescope's main task fly through space to search for new exoplanets
Kepler has spotted over 2,000 exoplanets and the telescope keeps making new discoveries every day
The satellite has given us a census of the Milky Way galaxy
We know that between fifty to a hundred percent of the stars you see at night have
Planets going around them and so the chances that we're the only
Planet with intelligent life. I think is very close to zero
To this day almost 4000 exoplanets have been discovered
Like Corot 7b
490 light-years away this planet likely is primarily made up of hot lava
At first glance planet HD one eight nine seven three three B
Actually looks like earth, but it has it's blue color for another reason not water
But hazardous glass particles in the atmosphere with brutal winds of five thousand miles per hour
It may even rain molten glass on this planet
55 Cancri E. May actually possess a diamond core the surface is a scorching
3,600 degrees Fahrenheit and the atmosphere of this exoplanet
Contains high amounts of a toxic proceeded life as we know when on earth could not exist here
2.0. I think that's what we'll be looking at
Alien invaders may come from a place much like a second earth
Then why would they need to come to ours
If they truly come to wage war humans would have no hope
Military experts believe that facing aliens in combat would be devastating
If an alien civilization has the ability to cross interstellar space to reach earth, they undoubtedly have advanced technology
If their civilizations are more advanced than our own how can we prepare for contact?
Another scientist is also scouring the skies to find a planet where life is possible
Hiker hour is an astrophysicist at the German Aerospace Center
The big goal we have is to find planets that are similar to our earth habitable ones where we might be able to find life
Hiker or knows the key is to find planets with a solid surface and water the two attributes that seem to go hand-in-hand
with the existence of intelligent life
If I push the earth closer to the Sun it would get hotter
Some oceans would evaporate, and then we would have a planet that was not inhabitable
And if I push the earth farther away from the Sun
It would be so cold that the water would freeze and we would just have an ice planet our planet wouldn't be habitable then either
So there's a specific ideal distance from the Sun
We call this area the habitable zone
This habitable zone is the only place where life can develop but for them to happen the planet also needs an atmosphere
Like the thin gas layer
Which also surrounds our earth protecting life from the lethal UV radiation emanating from stars including our own Sun?
The atmosphere is
Also crucial of course because we breathe and we need the oxygen from our atmosphere to live so a planet must also have the right
kind of atmosphere
She uses a trick to quickly find habitable planets
Wherever a planet flies past its star at this precise moment the star darkened slightly
Using the strategy researchers like hiker hour now have detected more than 30 planets in the habitable zone
That could be full of life
One planet looks particularly promising to researchers
kepler-452b a planet 1,400 light-years away in the constellation
Cygnus, this planet is amazingly similar to earth its star has a similar size and temperature to our Sun
For a round trip around the star it takes
385 days
Just a little longer than our Earth's orbit and the distance to the star is just right
Closer to finding a world very much like our own
I think it's only a matter of time now, and I think it could be
staggering ly close a
New European telescope has the means to finally find this second earth
This advanced device is called the European extremely large telescope e-elt
For short by 2024 the telescope will be stationed in the Chilean desert. It will be the largest of its kind in the world
at the Assembly Hall of the European Southern Observatory
Technicians test the parts that will later become the telescope's main mirror
So what do we have here is the very first prototype of the primary mirror of the ELT?
So we need a very large mirror, which is impossible to build today in a monolithic piece
Close to 800 individual hexagonal mirrors will be put together to create the telescope's 40 metre massive mirror
Up to now we've been building telescope up to 8 to 10 meters
But now we have a technology to build something which is extremely large
40 meter in diameter is as big as the Alliance Arena nearly, and it's enormous
The scientists hope that the telescopes power will finally prove that there is life on an exoplanet
They want to use the telescope to examine the planet's atmosphere
As soon as the planet moves in front of its star using the color
Scientists can determine. What kinds of molecules it contains
The ultimate proof is to identify some specific
Markers some ozone for example some specific elements in the atmosphere of this planet that can only be produced
By life by plants by by little creatures in in in the in the ecosystem
With the new telescope researchers are aiming to find proof of life within the next 30 years
So Stefan our lifetime so in the next decade will be able with ELT to really understand
If there is life potential life or not
Is it possible that
extraterrestrials are already also watching us are they planning a visit and
for what purpose
Sooner or later we're going to see some kind of signs of extraterrestrial life
We need to prepare
An
Extraterrestrial attack would be the greatest catastrophe in human history
So that fabulous custom fucking
Its life out there like on earth
It probably shares some of those
Characteristics at life on earth has is there any way to predict what the invaders will look like some researchers believe that
Aliens might be extremely similar to us
I think there's a great chance that some
Extraterrestrials would look exactly like us so for example eyes are very useful
Legs are very useful for mobility those things may be present elsewhere in the universe so I would not rule out
some
extraterrestrials being indistinguishable from human beings
Different environmental conditions
Could mean that life from other planets would look drastically different
These organisms would need to endure extreme heat or extreme cold
If they came from a planet with stronger gravitational forces
Extraterrestrials may have adapted and developed massive muscle to fight against gravity's pull
Small compact creatures would have the advantage on this type of planet or a planet with less gravity
Aliens would need much less muscle to move around their planet could be populated by thin giants
All life on Earth is made up of carbon and water, but in another world
It's possible that life developed from entirely different chemical elements
On Saturn's moon for example
There may be no liquid water, but there are still other building blocks. That could be combined to form life
so creatures on Titan could use ethane or
Methane as a liquid instead of water
Then the building block would probably be silicon instead of carbon and those creatures
might breathe in hydrogen instead of oxygen so
Life could be very a lien on that world
There's also the possibility that the visitors will not be actually alive
Aliens could potentially send their own intelligent machines into space
We actually meet them in person
They may already have bioengineering and artificial intelligence
So don't be shocked to find that they're part robotic and part biological
Many scientists think that it's entirely plausible that aliens have developed advanced spacecraft capable of reaching earth
Yes, it's very possible to do interstellar travel
it just takes a lot of effort and a lot of money to develop such a spacecraft universe a
Journey through the stars is already within reach
Russian millionaire Yuri Milner has invested 100 million dollars into the u.s.
breakthrough iniciatives project and others are on board including
astronaut Frank Drake and even star physicist Stephen Hawking
Search for life beyond Earth it is important to us to know if we are alone in the dark
The plan is to visit our neighboring star system, Alpha Centauri
only 4.2 light-years away from Earth
Scientists have discovered that in this system the red dwarf star Proxima Centauri is orbited by an earth-like planet
Proxima B sits perfectly in the habitable zone making the planet a prime candidate for harboring extraterrestrial life
But it would take an unmanned probe 32,000 years to reach Proxima be
Milder and Hawking believe we need a mini probe
which will be able to make the journey in only 20 years if
The probe weighed only a few grams it could be equipped with a sail
Extremely powerful lasers on earth would then be aimed at the sail and in just 10 minutes
The probe would be pushed by the lasers and a quarter of the speed of light
For the first time in human history
We can do more than just gaze at the stars. We can actually reach them
traveling at a speed of
45,000 miles per second it would only take the ultra light spaceship 20 gears to reach Alpha Centauri
If sentient life is based upon expansion and based upon exploration
Then it's entirely likely that other sentient species are also engaging in interstellar exploration
Advanced civilizations could have developed entirely different technology some researchers believe that the most progressive
Aliens can tamp the energy of entire stars to create wormholes that they then use to travel through space and time
We have come from
horse-and-cart to stealth fighter and space rock yet in 200 years
Now imagine a civilization with a million year head start
Which is not difficult to conceive of in a universe 14 billion years old?
So let's not rule out the fact that if there are civilizations out there. They may come knocking on our door
Invasion by a higher tech civilization
Poses a serious threat to the human race in an attack we would barely stand a chance
Humans would need to find shelter and safety as soon as possible
If this crisis would come to fruition everyone would be caught off guard
But I think it's important to consider the possibility of interstellar species approaching the earth that might be hostile and
Consider what resources we might have at our disposal
To allow us to defend ourselves
and
Time may be running out
Aliens may already be heading towards their target earth
But some alien hunters are more optimistic
One of the most famous hunters believes that aliens will be peaceful Seth
Shostak has devoted fifty years of his life to SETI research the search for extraterrestrial intelligence
The American astronomer is convinced that his body of work will pay off
There like a trillion so that's a million million planets just in our galaxy
It's like you bought a trillion lottery tickets
You know a couple of them are gonna be winners, so it just strikes me is inevitable that there is other intelligent life out there
Someday we may be able to actually communicate with
Extraterrestrial civilizations, but are they already trying to get in touch with us
to find out SETI researchers
Use radio telescopes like the Allen telescope array in California
These telescopes can receive acoustic radio signals from deep within the universe
We point them in the direction of nearby stars, which we think might have planets which might have life
Which might have intelligent life?
And we just look for signals that are coming from those directions
Signals at one spot on the radio dial that would tell us hey, you know I don't know what they're saying
I don't know what they look like but they've built a radio transmitter and
Once upon a time a signal just like this one reached Earth
1977 the Big Ear radio telescope of the Ohio State University as its antennas aimed directly into space
using these antennas the telescope could capture every radio wave lying in its orbit and
Suddenly it received a strange signal from space
Astrophysicist Jerry Amon was working on the big-eared telescope. He could hardly believe it when he analyzed the recorded data
In those days all the data were just printed out as numbers on a big printer
And he would just go through it and look to see if there was anything interesting that it happened that night before one morning
He finds a big signal and he gets so excited about any rights Wow
Next to it
This wow a no came from the constellation Sagittarius?
200 light-years away from Earth
with a 30-fold standard deviation the signal was strong enough to be heard over the background noise of the universe and
May have been sent out by another civilization
But the WoW signal was never detected again
To this day it is unclear if it is a result of something natural or if it was caused by something else
If extraterrestrials are sending signals to us. What would happen if they personally paid us a visit
People would respond in many many different ways some people would literally I panic in the streets
Chaos and violence would strike the cities of earth our world as we know it would collapse
Just go
Beer shock panic anger it's entirely likely that humans would be terrified
At the SETI Institute in California Seth Shostak and his colleagues are still looking for recent signals
the astronomers evaluate data from radio telescopes all over the world
To date they have not found any evidence proving that
extraterrestrials exist therefore many scientists criticize SETI search methods
We look for radio signals from
Intelligent planets, but that's looking at the wrong frequency
Why should they use old fashioned radio to communicate?
The alien hunters have not given up to finally get in touch with
extraterrestrials some SETI researchers
Think that we should play a more active role in
Communication instead of listening to distant signals our own messages should be sent into space
if you send to some nearby stars
So they're not terribly far away 10 light years 20 light years then maybe you get a response while you're still life and it can
Enjoy a response
It would not be the first time that astronomers have sent a message to aliens
In
1977 the Voyager 1 probe made its way into space
Since then. It is reliably sent back data in images from our solar system
Precious cargo is stored onboard
the Golden Record a
copper disc that holds music images in sounds from the earth
Greetings recorded in 55 different languages a way to kindly introduce ourselves to foreign civilizations
Konichiwa ohgenkee deskah
hola saludos
in
2012 Voyager 1 became the first probe to leave our solar system
It is flown further into space than any man-made object ever before
This cosmic message in a bottle will travel even deeper into interstellar space
By 2025 the probe will run out of its energy supply and continue into the cosmos
uncontrolled
With the aliens have refined these spacecraft
I don't think so they're about the size of a Volkswagen Beetle
Right and they're dark and and their transmitters won't be working then so how you ever gonna find these guys
It's like you know looking for a don't know a little bit of flotsam on the Pacific Ocean you're probably never gonna find it
Acoustic signals are already being sent out into space
The most famous signal was the Arecibo message in
1974 the message created by astronomer Frank Drake used binary code to provide information about human biology
The population on earth and tell the recipient exactly where the signal originated so far
We haven't received a reply from aliens
Seth Shostak thinks we need to be thinking bigger in fact
He wants to offer big data to the aliens the more information. They receive the better
They will understand us. I would send the Internet actually we just send everything on the Internet
I mean if you walk down to the beach
And you find a message in a bottle and it's one sentence you may never figure out what that message was about
But if it was you know a thousand books
Well you might you might a lot more
But others think that these well-meaning messages would make us in calculon
enemy aliens might leverage these communication efforts into a full-scale attack I
Think it's a rather silly idea to send out
powerful beamed messages
Indicating our presence who knows what's out there in our galaxy. It's like being a
four-year-old in the middle of a dark forest
Does she
explore and learn
The situation or does she go running screaming through the forest saying
monsters hello
Everybody I'm here
Critics say that stopping these messages is the only way to prevent a human catastrophe
Before proceeding there needs to be a greater scientific discourse
About what these messages should contain and who is allowed to send them I?
Think we should hold discussions
serious
scientific
Investigations and discussions of the pros and cons before we be messages into space
Early projects like Yuri Milner's are already underway for the best message. That could be sent to
extraterrestrials a
Reward of 1 million dollars is up for grabs
Though we previously also warned against sending messages Stephen Hawking now supports the endeavor
It's time to open our eyes our ears and our minds to the cosmos
if
extraterrestrials received our signals long ago
Now it's too late for us to hide
Any society that could do that any society that could come here and threaten you
They've got bigger antennas than we do they can already pick up our television our airport radars all sorts of stuff
So we're already telling them. We're here
Pandora's Box might already be open
At this very moment aliens could be enroute to earth
And Stonebridge muffled he would you own advocate and I'm not five time thus militares an alarm, but I trust in Verizon
Does not met
And honest
Isn't fast as you have
If there are more intelligent more powerful and therefore more dangerous civilizations out there
We should be very careful about
Contacting them
These fears are not unfounded in the history of mankind when a new country or continent is discovered
It is always ended tragically for those who are conquered the less
technologically advanced culture
experienced pain in some cases death and extinction in some cases slavery
An invasion of militant aliens could end the human species if the battle begins
Those who could hide in time would be the only survivors
Aliens would need a motive to fight earth
It is possible to conceive of other civilizations
Who are at war in the cosmos and who are perhaps?
desperate for new
territories or new resources they may look at the earth and
Say this could be our new home would universal war with
extraterrestrial life be plausible solely for our resources
But so many planets out there orbiting stars that will have water and carbon and all the elements that are on earth
There's no reason to come to a planet filled with life
Our planet is home to 7 billion people
to aliens the most interesting resources on Earth might actually be its inhabitants
If they are warlike it would be like
Godzilla meeting bambi it would be no contest
whatsoever
Is there any way to prepare for this kind of disaster?
Space agencies have emergency procedures to respond to dangers like meteorite impacts
Do they also have a plan in case of an alien attack?
Scientists and military experts have already thought through. What would really happen in an attack situation
An alien civilization
approaching earth as a potential target for conquest is going to first try to eliminate any kind of
resistance the simplest thing they can do to neutralize their weapons is to use the
electromagnetic pulse
Without warning all energy supplies would be shut off
electronic devices cars and telephones would be useless and
Humans would be suddenly powerless
You would essentially drive human civilization back into the 19th century
Earth's largest cities would be targeted first in an invasion and most would not survive the brutal war
I'm sure that many of the nations of earth would use nuclear weapons even on their own soil as a last resort to try to
Stop some form of alien invasion
Using weapons of mass destruction would destroy our own planet
Luckily there is also another strategy
the first objective would actually just be survival the second priority would be the capture of enemy technology and
Reverse-engineer them it may be possible for us to produce them in significant quantities even
If aliens haven't planned to deadly invasion it could still turn into war if we get in their way
And even if the aliens don't wanna conquer us
Even if the aliens don't want to eat us eat at the aliens don't want to plunder our natural resources
We might get in the way because maybe they have different intentions toward us
Humans would have no way to escape
If an enemy arrives that has such a massive disparity in their technological capabilities that you have no means of
Potentially fighting back then perhaps your best opportunity to survives to accept the changing nature of your civilization
They came here with friendship
As explorers that's great we would hold out the hand of friendship ourselves if they came as conquerors
I think we would simply have to surrender
This would be a war we could not win
Testament
Only one thing is for certain
extraterrestrials arrival would change our world forever
The only hope is that if they do common they will come in peace
