What If Alien Astronomers Were Looking At Our Planet, Would They Find Us?

What if Aliens are watching us? Today we'll find out!
f you're a forgetful person looking for proof that Earth hosts life, this planet offers you an unlimited supply of remarkable phenomena to observe up close: a fossilized shell on a canyon wall, a ladybug eating an aphid on a rose stem, an anthill in full swing...
Little details. The only thing you have to do is: get close and look.
From the window of an airplane in flight, these small details quickly disappear. And then, no more ladybugs or bizarre shells. From just a few hundred meters up, everything on Earth that is life becomes virtually undetectable. How is earth seen from space?
Once you reach cruising altitude, at about eleven kilometers, even identifying the widest highways can become a problem.
And the details continue to fade as you ascend into outer space. From the windows of the International Space Station, orbiting at an altitude of 400 kilometers, we might see Rome, London, New York, Los Angeles, or Rio, but... only because we know where they are.
But we could easily see them at night when they are bathed in the glow of their lights.
During the day, contrary to common thinking, we probably couldn't even make out the Pyramids of Giza, and we certainly wouldn't see the Great Wall of China, which although thousands of kilometers long, is only six meters wide. Much narrower than American highways.

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Credits: Nasa/Shutterstock/Storyblocks/Elon Musk/SpaceX/ESA/ESO/ Flickr

Video Chapters:
00:00 Intro
03:27 What would aliens detect?
08:49 Cosmochemistry

#insanecuriosity #aliens #AlienAstronomers

[InsaneCuriosity]

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[philbarrett]

The mathematical possibility of there being other life in the universe is overwhelming. Conversely, them finding us or us finding them is equally mathematically unlikely.

[theodoreroberts]

They would say, "look at them, I told you they were crazy!"

[yaeldragwyla]

If those aliens could observe our planet from their world, by then surely they would be able to use spectroscopy to see that our atmosphere contains a sizable amount of oxygen (about 21%), and that its load of oxygen is constantly replenished by something, indicating the likelihood of life on our world. During the day, plants are constantly photosynthesizing, liberating oxygen from CO2 by means of solar energy.

[davidh]

I think the geological characteristics of a living planet are perceptibly different from a non-living one.

[liam]

what i came here expecting: let's see how aliens would see us
what i learned from it: i see so we can't find any aliens cuz it's literally impossible to do so with our technology unless they are at least type 2 or above and the fact the the universe is so vast makes it all the more difficult

[enigma]

They'd be laughing so hard they'd crash into Area 51...again

[setiandromeda]

Very interesting ad illuminating.there is no reason to expect that life exists, only on earth.the journey to detect is a, very long one ad we have just started.considerung distances ad space travel it might take a very long time for sentient extraterrestrials to contact earth ad in any case why would they want to spend so much energy contacting us.there must be compelling reasons or firttuous accident or just mere luck

[debbieanne]

The problem is that earth has only had technology ie radio waves, satellites for a time being only the blink of an eye in our planet's billions of years in age. More likely they'd see a planet with zero human and mammal life

[dverygrateful]

I'm sure they watch with great saddnes how violent and angry we are.

[JoeyV]

The thing is, it depends on how close they are as light from our planet takes time to travel from planet to planet. If they are even a few hundred light years away, they ain’t seeing our planet lit up like a globe it is today. They would be seeing earth with its lights turned off.

[slaneville]

Depends how far away they are... if they are further away the further back in time they see...

[rXHrzn]

Idk why but i hate how aliens are ilustated.

[Semirotta]

Aliens finding us is a big question mark simply because it all depends on their ability to capture different waves we are sending out.

[mm-dwrr]

For their sake l trust they only see the good parts of us!! Not the bad.

[philbarrett]

What really bothers me with these types of questions is the arrogant assumption that other lifeforms need water and oxygen and light.
We dismiss planets based on not having these attributes despite having organisms on our own planet that don't need all 3 of these requirements to survive. So why are we so closed minded to other lifeforms?

[fernandochaves]

Nice video. Probably our radio signals and technological activity is the key to detect us. If they are, lets say, some centuries more advanced than us, their knowledge allows them to "filter" all unnecesary data, and recognize intelligent information... Separating it from background noise or pulsar's emmisions, for example. Biosignatures are also important, they may have been evolved a lot in that area.

[bubbaschwartz]

The aliens would pass this planet up and say there's wildlife there.

[kalmanbic]

Humans say that there's a possibility of life with any planet the contains water and we are not that intelligent that aliens who are observing the earth.

[model]

No need for your vegan commentary. You made a good video suspect.