Seeing how incohrrent and fractured humanity is, we'd meet them with a jumbled mix of:

• Rabid xenophobia
• Aggressively trying to convert them to a dozen of our different religions
• Forming multiple cults worshipping them as gods
• Creating a shit load of really weird rule 34 AI-generated porn focused on them
• Dismissing their existence as some sort of a deep fake conspiracy
• Trying to sell them some worthless shit for a massive profit
• Trying to sell them fellow humans as slaves
• Trying to steal their technology to conquer the galaxy
• Flooding then with brainrot memes for the lolz
• Trying to destroy them with conventional weapons

And they would see all this and either destroy us in disgust or get the hell out of the solar system ASAP and cordon it off with hazard signs.

Given that they have the means to have travelled from another world (presumably from outside the Solar System, as there are no signs of space colonising extraterrestrials in our neighbourhood we can observe), they must be technologically far superior to us. My guess is that they would treat us, little guys on a blue marble, like we do with ants.

Although ants have a very intricate way of life, with jobs, conflict, infrastructure, etc., most humans don't put too much thought into keeping them safe, we trample on their cities that we say are primitive compared to our own, and we export some ants to new worlds. Additionally, even among our own species, colonialism was commonplace in all parts of the world throughout the world and its remnants still exists today, as one group of people believed they were superior to another.

Intelligent extraterrestrials capable of interplanetary (and probably interstellar) travel would definitely outclass us in every metric, and they could easily wipe us out, either by accident or on purpose (through disease, conflict, colonisation, etc.)

However, I hope that these extraterrestrials eventually acknowledge our existence as a civilisation. A little like how there are entomologists who study ants for a living and conservationists who preserve their habitats. Or perhaps organisations like UNESCO, in charge of protecting dying cultures and lost traditions, could be formed by these extraterrestrials. Maybe treaties of reparations and acknowledgement of past crimes would be signed between our species, like how many countries do today.

That's just my thoughts though.

If they came to us it would not be for the resources on earth, there are plenty more in space easier to get. I think it would be curiosity. They would study us, and probably all life on the planet.

Hopefully with curiosity comes empathy and they uplift us.

Trump will post on Truth that we had a war and we won.

But seriously though, it depends on the type of aliens we’re encountering here. If they’re malevolent, they will probably wipe the earth clean and take all the resources.

If they’re more benevolent, they’ll just take pity on us, and turn back. Humanity is a problem that will fix itself if you just give it some time.

War, then our extermination.

A little bit of pee comes out.

Die of some random common illness we don't have any antibodies for.

Hopefully a species advanced enough to master interstellar travel would be mindful of that kind of thing though. I suppose at least they would probably be protecting themselves against that, so maybe it would go both ways?

Trying to overcome language barriers, probably.

Do you mean like if an alien just showed up on my doorstep and was like, "take me to your leader"? Because I would ask, "How about we just chill here for a bit?" because nothing good is going to come from the next part.

One group will sell out the rest of us, guaranteed.

A breakdown in society as people report it as hoaxes, missinformation spreading everywhere, religious groups fragmenting over if they prove or disprove their gods existence. The same bullshit whenever world shaking event happens.

They would be sick of our shit in 5 minutes

Something similar to what happened to india or Indonesia when the British/ Dutch showed up

Within less than an hour, Rule 34 will come into effect and someone will make a porn-film about them.

Try to kill them

It depends on what the extraterrestrials are like. I think its probable they would be as incomprehensible to us as we are to fish or bugs. I am confident that a significant percentage of people will immediately freak out and react with aggression regardless of what they are like, and that the wealthy will be looking for any way to make money from them, even if it means selling out life on earth.

At this point?

I see 100% of the world, all the narcissists and psychopaths in power, asking them to please take them away from this horrible world

Pretty much everything from the graphic-novel Signal from Space.

General societal breakdown in various sectors.

Also, it would unite most of humanity in ways we have never seen before.

A fantastic amount of talking. The militaries would want to be in readiness, for example, just in case the extraterrestrials are not friendly, and the diplomatic corps would be doing their best to figure out how to communicate with them.

A lot of religions might also be thrown a bit into the air by the arrival of aliens, so there would be some chatter there, too.

Are aliens subject to human rights? Are they beings also made in God's image, etc.

I can see three options.

1. Division, this would divide a lot of groups, and cause a lot of internal rifts.
2. Unity, a foreign entity could easily be a powerful unifying force.
3. Biological disaster, either through incompetence or ignorance, we or the aliens don't practice good biohazard containment, spreading infection throughout our world.

I don't think it would be in the advantage of a smart civ to willfully contact another smart civ till it is confirmed that the "to be contacted" civ has a really good understanding of game theory.

You cannot negotiate mutually assured destruction with a civ that does not understand what mutually assured destruction means.

Do I think we would be destroyed if some other alien civ finds us? No. If civ A observes civ B destroying civ C, everyone would want to destroy civ B immediately. The possibility of there being peaceful contact for civ B goes away.

Also, contacting us must be in the benefit of the civ that contacts us (assuming they are rational).

With every major discovery in science ultimately being pretty boring to someone outside the field it might become useful, I would expect to be disappointed that the aliens look exactly like humans or something like that.

Their attitude towards us really depends on what their evolutionary pressures were. If resources were/are plentiful, they might have a less aggressive nature and simply wish to meet us. Otherwise, we might be on the chopping block.

As for us. I imagine a decent portion of humanity would immediately default to rampant xenophobia or weirdly sexual obsession.

1. They remove our ability to leave the planet.
2. Continually

Done.

What do you mean "meet"? The way we would reach contact is by radio signals at first, not by actual physical visits. So at first we would only be communicating with probably a very long light delay as they'd be very far away. Realistically speaking neither would be able to visit the other in any feasible way, unless they have technology that is far, far beyond what we can imagine right now. Interstellar travel is very hard.

To be realistic I think they would have scanned our airwaves and observed from afar and decided to get the hell out of this quadrant of the galaxy. If they needed our resources then it would be like the "Independence Day" movie, only the aliens would easily win.

Breed with them and eat them.

If you subtract the satire from the movie Mars Attacks, pretty much that. Uh uh uh.

Watch the movie “Contact” for a good depiction of this.

Its so hard to say. So much depends on what is possible interstellar travel wise. If light speed is the limit it would likely be with probes and its kinda unlikely that if they could send things out that far and communicate back that they would need many elemental resources and they would have energy needs solved. Honestly I think its very unlikely we would meet any unless we travel outward. Like I think its more likely their probes would meet our probes and maybe we could get somewhat of an idea of where we came from and where we are going but it would take years to have communications. If there is something faster then its essentially magic by our standards and that just makes things more up in the air.

Not sure but I have said that it'll happen under Trump. It has to. The way things go lately this is just expected at this point

Pretty sure we'd have no communication with the alien that wasn't just corrupt politicians trying to speak for us to get some sort of trade out of them to increase their own power. It's too important for any/all normal people to have a voice, and then when the aliens dislike the abhorrent greed we'll probably just suffer some how more than we already do. I'd say we're better off not reporting any alien sightings. I would trust almost any human on earth more talking to aliens on my behalf than a so called leader currently. Maybe Ireland, Spain, a handful of others have better than regular Joe leaders, but it's rare.

Anal probe.

Depends where and how. If alien space ship crash landed on earth, I'm pretty sure every government would be eager to salvage every bit of priceless tech onboard.

But if it was a diplomatic mission with controlled first contact over radio signals, then it would probably go very differently.

Lots of people getting probed against their will.

Same thing that happened to the tribal native people during colonization.

Depends, did we find them first or did they find us first? I project our colonial past as a fear of what more advanced aliens would do. Because that's what we would do to any alien natives. Very unlikely we are technologically tied in progress.

If they find us first, then mass panic at least at first.

The extraterrestrials would soon enslave or kill us, and plunder the planet for resources. Positively, should humans travel to another planet, we would soon enslave or kill the inhabitants, and plunder the planet for resources. Luckily both won’t ever happen; space is too big.

YOU ARE BUGS

When one civilization meets another, far more advanced, civilization, what tends to happen to the less advanced one?

Yeah, that. It's gonna suck.