Have They Seen Us? | Space Time | PBS Digital Studios
Вставка
- Опубліковано 20 гру 2016
- Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: to.pbs.org/DonateSPACE
Are aliens watching Earth TV? We'd like to credit the SKA Organization for the image used in the thumbnail.
Support us on Patreon! / pbsspacetime
Get your own Space Time tshirt at bit.ly/1QlzoBi
Tweet at us! @pbsspacetime
Facebook: pbsspacetime
Email us! pbsspacetime [at] gmail [dot] com
Comment on Reddit: / pbsspacetime
Help tranlate our videos! ua-cam.com/users/timedtext_cs_...
Sources and further reading:
The Square Kilometer Array
www.skatelescope.org/
Eavesdropping on Radio Broadcasts from Galactic Civilizations with Upcoming Observatories for Redshifted 21cm Radiation
Loeb & Zaldarriaga 2007, Journal of Cosmology and Astroparticle Physics, 1, 20
arxiv.org/pdf/astro-ph/061037...
Costs and Difficulties of Large-Scale 'Messaging', and the Need for International Debate on Potential Risks
Billingham & Bedford 2011
arxiv.org/abs/1102.1938
Previous Episode:
• Escape The Kugelblitz ...
Written and hosted by Matt O’Dowd
Produced by Rusty Ward
Graphics by Grayson Blackmon
Made by Kornhaber Brown (www.kornhaberbrown.com)
Comments Answered by Matt:
Luca$sino
• What Happens at the Ev...
Douglas Oak
• What Happens at the Ev...
Grin Reaper Of Trolls
• What Happens at the Ev...
viermidebutura3
• What Happens at the Ev...
Cornerrecord
• What Happens at the Ev...
Special thanks to our Patreon Big Bang, Hypernova and Quasar Supporters:
Henry Van Styn
Antonio Park
Joel Brinton
Luna IT Solutions
Clock Watcher
Joe
Ratfeast
Vitaly Kovalenko
John Hofmann
Thanks to our Patreon Gamma Ray Burst Supporters:
Jade Bilkey
Kevin Warne
JJ Bagnell
J Rejc
Bernardo Higuera
Michael Fischer
Dylan Merida
Colette Weeks
Amy Jie
Anthony Caridi
Avi Goldfinger
Corey Smeaton
John Pettit
Shannan Catalano
Florian Stinglmayr
Yubo Du
Benoit Pagé-Guitard
Ronny Polonia
Nathan Leniz
Jessica Fraley
Kirk Mathews
Loro Lukic
Carl P. Corliss
Brandon labonte
David Crane
Greg Weiss
David Matteson
Marc Lagarde
Eric Jackson
Will and Sonja Marple
I wish I had the funds to donate to this channel. Absolutely my most favorite channel on youtube.
Sam Harris it has bee
Sam Harris its my favorite channel
I completely understand the feeling. I'm able to help with a very small amount, but not too long ago I would not. Just share. Share the channel. Get the message out there.
They're doing pretty well, don't worry about it.
Which I do for some channels -- with very little success afaik.
I've cut my patreon to zero. Why should I, being in early retirement, give a few bucks to somebody (I *don't* refer to this channel) who makes 10 or more times my entire pension (foremost, boogie2988).
this dude's microphone is crisp! crisp!
YES THO
It's on fleek, whatever that means
It could almost be considered ASMR. Dude has a nice voice.
sting0072007 chips
got it
I wish more videos were like ASMR, instead of all the bright lights and loud noises and editing out the pauses between sentences...
We blasted Twitter at them? Great, they're bringing an armada.
Songo - 😎
Toughen Up, Fluffy - omg 😎
They will bring an armada to set our world leaders right and make them realize 'with great power comes great responsibility' and they've been short-changing us. Will help us to clean up the world and become galactic citizens.
Nah. They'll just let us wipe ourselves out.
What if they're Vogon Construction ships?
Maybe in 50 years aliens come to earth and say:
"We are great fans of the phantom menace"
If they say that I'm asking the aliens to marry me
George would hope so anyway!!
“It’s treason then.”
Show them the last jedi
@@Jacob-sy5xm I'd rather not be exterminated
No wonder they don't visit, they've seen all the alien invasion films where they get destroyed, they're scared
Ben Rhodes lmaooo!!
Ha! Good one.
Stand up fodder, that
Or our wars within our own planet
those films are why they anal probe all the abductees
Imagine if we do get a message... and it is decoded to be something like, "Stop broadcasting, you are in danger".
Ryan I can't think of a more terrifying broadcast to receive from Aliens. What do godlike beings fear?
There is a book called Revelation Space from Alastair Reynolds pretty good book and in it it shows you better be damn carefull who you let know that you are a technological advanced race.
Holy shit that gave me chills.
bringerofrage
no thats not scarier actually.
bringerofrage
Why are you so salty. Does it have to be realistic to be scary. He says "imagine".
(btw. no that is not more probable. they may develop a desease though)
"welcome ships" aka cylon basestars
I cackled
I picture some lazy monitoring aliens... kicked back snoozing in their observation office and they catch some radio transmissions from the 40s and they're like, "wake up boys we got a live one" So half asleep when they arrive they crashed in roswell.
It's all joke that advanced aliens will randomly crash on earth
"miserable 30 frames per second" PBS spacetime confirmed PCmasterrace members
The Glorious PC Gaming Master Race*
May our framerates be high and our temperatures low.
Now, if only we could get your comment to 60+ likes, that would be nice.
I'm sure they referred to the frequency of the TV picture wich is 50 resp. 60 Hz.
Am I the only person that sees no difference between 30fps and 60 fps?
Felipe Lorenzzon Yes. The difference is very obvious if you play yourself.
I like to think that the first human broadcast aliens see would be Star Wars, and then they think that humans have all this cool hovercar technology and FTL spaceships and think we are the most badass civilization is the galaxy.
When they finally come over, they end up being massively disappointed.
Get real. The first thing anyone would hear would be our first radio broadcasts.
Depends on when they start listening
oh... kay.... I just hope they haven't seen Red Dwarf as well.
I thought the first broadcast aliens saw was Hitler's speech.
Only if you try to make Contact.
I bet Aliens watch and figure out the meaning behind the ending of LOST before I do.
There was an ending?
That would imply lacking intelligence on their part, considering there is no meaning, since the writer only sets up mystery boxes.. that can contain a mystery, that could pose a question, that could have an answer... but it's just a box.
"Captain, I'm detecting a strange pattern of electromagnetic waves coming from a class M planet.
"Helms, set cource to the anomaly"
"Hay, Captain"
Give me one ping Vasili, one ping only! In the mean time on Earth, at the big ear radio telescope: that was strong signal! Wow! ;)
The first transmission we get from the aliens will be: "SHOW ME WHAT YOU GOT"
Disqualified!! DISQUALIFIED!!!!!
I WANT TO SEE WHAT YOU'VE GOT
I LIKE WHAT YOU GOT.
Take off your pants and your panties, shit on the floor, time to get Schwifty in here!
Mike Turner It will be "fuck this shit I'm outta here."
"Once inside the Event Horizon, avoiding the Singularity is like avoiding next Tuesday"
Mindblown.
On the other hand reaching next Sunday is like stepping out your door.
So Interstellar's Black Hole scene isn't as inaccurate as many people say! :O
I think a radio telescope needs to be built`on the dark side of the moon. No noise from earth.
Bing Hyong-bae Bang - China just put a Rover there.
*The other side. There’s no ‘dark side’ of the moon.
Jacques Stoop The term "dark side" in this expression actually means the "unseen side" of the moon. It's a poetic expression rather than literal, but yeah if you don't know that it can cause confusion because you take it literally.
@@anthonyrobertson7062 I think that, as we start getting around our solar system, the expression will slowly fall out of use. It will become just the name of a classical music album :)
Anthony Robertson
Because the moon is tidally-locked to earth, it's the far side of the moon. Dark Side of the Moon is a Pink Floyd album.
How do you slide sideways so effortlessly?
Im also curious to know which type of sign language he is speaking with. Those crazy arm and hand movements are fantastic. It seems like a really beautiful language he’s using. Wait.... could it be? Is that alien sign language? He’s communicating with the aliens! Oh my god! He’s one of them! I knew it!
He has no horizontal inertia
Can't even get TV broadcast at my house and y'all talking about aliens watching TV?
Bobby Harper lol
where the hell do you live? I've watched TV in the Amazon rainforest
steve0793 Louisiana. Sixty miles from a broadcast station. Cell phones don't work either.
Bobby Harper
Get satellite tv/internet/phone? And also, how the fuck can it-infrastructure be that crap in Louisiana, isn't the population density quite high there? I mean for crying out loud, I've had cell coverage on a frekin glacier, on a tundra, 2 days march and 6 hours by car from nearest city.
Louisiana is a fairly poor state, with an ethos of NOT investing in its own infrastructure. The legislators there follow the 'progression through suffering' school of economic thought, basically if they do not invest in their people, their dire life outlook will cause them to pull themselves up.
I bet if there are aliens listening out there we will find out their first words are "please keep it down, will call space police"
Xd
and we'll start a #EarthLivesMatter movement to bitch about their alien supremacy
viermidebutura please keep anything close to politics out of this, it's an interjection which is just looking for a fight.
Austin Drapen ok sorry we start the #EarthLivesMatter movement after we push the false narrative of hands up don't shoot for a few days/weeks
aliens will land and be like "don't act like an idiot and you won't get shot".... "even a clingon knows that...damn".
Man I love this stuff!!!! The universe is unbelievably huge, most people have no clue.
Nobody has, it's outside of human experience.
That's what the atom said
Exactly.
The difference of knowledge between the most educated and least educated human is greater than the difference of knowledge between the least educated human and a dust mite.
The first contact from another planet will be an alien traversing time and space to say “Turn that shit down!”
Exactly.
Someone actually sent a high energy beacon signal of celebrity tweets towards the location of the wow signal? That's hilarious
And foolish
Humans have a long "ongoing" history of lies, stealing, violence/wars, military expansion and biochemical warfare. If there's any intelligent space aliens in the universe there's ZERO chance they would trust us. Logically since they know we can't be trusted it means we humans would be classified as a potential threat. This means the best case scenario would be those intelligent space aliens controlling and limiting our expansion in the universe.... and there's many darker more scary scenarios. Any intelligent space life would behave this way out of protecting it's own existence.
Knowing the best case scenario means the intelligent space aliens would be limiting and controlling our expansion in the universe.... yet here we are providing them our exact location in the galaxy. It's like cooking cheese hamburgers and steaks in the African jungles for 5 minutes and wondering why no friendly animals have arrived.... Ohhhh they are coming and they won't be friendly.
I fucking love this channel. I wish I was rich so I could sponsor all my favorite UA-cam channels.
imagine in 100 years theyll come and try communicate (having decoded our language via twitter), they'll try to speak to people with old old old (yet still) dank memes and spell like a 14 year old texting
"it's an older meme, sir. But it checks out"
got me thinking of that scene in 'contact' in which the aliens sent us a video of one of hitler's speeches. obviously a cause for alarm, but it was just the aliens telling us "we see you" by forwarding one of our very first broadcasts.
I think it’s weird what we are sending out to represent is. Like it shows us as so aggressive
Im sure they wouldnt like his version of racial socialism either
Great video. Thanks. My computer has been processing SETI@home data blocks since May 1st, 1999.
userid=131327
Your computer is really old.
How, if SETI@home was released on May 17, 1999?
I don't even know what that means.. explain? I know what SETI is.
Download the SETI software and you'll receive blocks of data for your computer to process. It's called distributed computing, which Berkeley uses hundreds of thousands of computers from little people like us instead of buying one big super computer to process the data.
5:06 OMG!!! *quantum fluctuation for the first time captured on video!!!!* His hair suddenly changes shape out of nowhere.
Don Solaris I
It was a 5th dimensional fold that made the 4th dimension skip
That is what we scientists call a spontanious cosmic haircut. Happens once in a while, but first time on UA-cam
Same
We are actually getting much less radio noisy due to radio broadcasts becoming an outdated technology (yay the internet and cable TV) and the fact that what there remains of radio telecommunications is increasingly tight beam focused (especially long distance transmissions). Encryption is also doing its part, making any signal look like noise.
Our radio noisy phase may soon be over altogether having only lasted a century or two even with just the technology we have today. It is also conceivable that there exists a telecommunications technology that is so much better than radio, landlines and tightbeams (instant, any distance/place, no loss, low power) that any advanced civilization discovers within a millenium or two of its bloom, that using radio would seem like using stone tools.
Much depends on whether FTL is possible or not. If it is, then presumably the same basic tech can be used for FTL comms, rendering radio for anything other than planetary transmissions laughably obsolete. If it isn't, then it won't make a huge amount of difference who hears who; we won't be able to drop by and visit each other on any kind of reasonable timescale
That thought has merit, but I think it's not going to ultimately prove to be the case. There will always be some niche broadcasting at high power as long as human civilization doesn't fail outright. Why do I think this? Because when TV came along, people didn't shut down radio altogether. When cable TV and then the internet came along, people didn't shut down broadcast altogether. It may constitute a smaller fraction of what is done, but I think a substantial amount of high power broadcasts will be continued as long as civilization as you know it continues.
It doesn't matter if we are noisy or not in the radio. The Earth atmosphere can be inspected for biomarkers and industrial pollutants, and it can be seen from far off.
WOW! That was amazing! Thank you for sharing this video, I really enjoyed it.
They'll probably invade in 1000 years, seeking a missing episode of Single Female Lawyer.
MattExzy omicron persei 8!
i dont know how to spell persei
persyi
pursey eye
purseei
"And now we must return to our planet, to catch the end of a thousand-year-old Leno monologue."
It's true what they say: Women are from Omicron Persei 7, men are from Omicron Persei 9.
we are sorry due to a techincial problem single female lawyer can no longer be shown. we now present to 8 animated shows in a row instead.
This channel has been nailing it for the last while! Loving the videos!
Scrap Mechanic
I love these videos. Everyone thinks I’m a nerd, but I now have about 15-20 people watching this channel as well. Word, keep it up and even more will come.
Thanks for covering this subject. I have always wondered how far and how big of a chance we have had to be discovered. im excited about what SKA might find.
They've watched Star Trek, they know the Borg are out there. Fat chance they'll be broadcasting...
They might be looking for war mongering allies! Here we are!!
Or possibly there is no other civilization to see us.
Have you seen the emoji movie trailer? It clearly explains why no aliens would ever visit us
kambiz I mean, it's hard to fathom that out of the massive universe we are the only intelligent life, but *some species* has to be the first to utilize radio waves right?
Alex Perruci Yes, it is hard but at the same time it is also hard to imagine another civilization based on the emptiness of our universe. We don't know the answer.
i think this is very likely
life is not good so it's better for them
Great presentation style! I'm learning something new on every episode. It would be so cool if we already had space ships like those portrayed in "The Expanse" or "Firefly"...well, at least something that's obeys the laws of physics
This channel shucked my my mind to such an extent that I read Kurgezagt as Kugleblitz!
After seeing 100 years of mainstream media, I think the aliens prefer to avoid us.
"Why is this channel called CNN, so obsessed with this guy named Trump!?"
I'm sure that's the first thing they notice. Not the fucking wierd ass game shows from Japan.
@@dphorgan You got Trump because of C02 climate change crap.
@@dphorgan Trump has been encouraging Hate Crimes, as in counties were he holds his rallies have Hate Crimes increase by an average of 228%. And now it becomes clear that he believes that the Rule of Law doesn't apply to him. So of course he gets news coverage...
@@peterjohnstaples You are commenting on a Science Channel and yet fail to understand that over 95% of Climate Scientists are very, very concerned about the effects of Green House Gasses including CO2, Methane, etc. Stop being such a tool Peter...
Every time I watch this show, my brain turns to guacamole.
I love it.
Such polite and well researched responses. Keep up the videos.
I've had noisy neighbors, and I have found the sound of them enjoying life just warms my heart. I hope we have neighbors like me.
Will you do a video on "What can happen to humanity should we get a radio transmission that is 100% confirmed to be from an advanced alien civilization?" There have been many movies and books about this and I would love to hear what you guys have to say about it.
to be 100% confirmed their star ships would need to be in Earth orbit
Just a transmission probably wouldn't do too much, we have flat earthers now, how'd you prove this to people? What would you do with the information? You'd want, say, encoded technological information or a physical probe.
before looking out there for answers, look right here on earth!! planet earth has been in perfect condition for life to exist for the last 4 thousand million years, 4000,000,000 years and yet humans are the first ones, if advanced civilizations were that simple, then where are the thousands of advanced civilizations here on earth?? we should have recorded histories of countless species becoming an advanced civilization on this planet at this moment should exist at least 100 different type of species of advanced civilizations!! but it looks like humans are the first ones, we are the first ones,, there should be advanced civilizations in the oceans, in the skies, but none of the species are capable of doing it, only humans!! this tells you a lot, and if people are not able to understand this then you understand zero about nature and how the universe workds.
oosveluzo levso
Wow, 4 thousand million!!??
As usual the answer is just that we don't know how it works. Maybe Earth is a common example. But maybe it's an exception... in a way you wouldn't expect. Maybe most worlds with life are hosts to dozens of advanced civilizations created by different species at any time. Maybe they are all hiveminds that don't really care about life on another planets until it's too late. Maybe most civilizations destroy themselves in an nuclear war in the equivalent of our cold war.
All of this, again, because we only have one data point on the graph, and that is Earth, and us humans. From there, we can only speculate AND seek for more data.
What you're doing there is the common mistake of assuming that Earth is representative of how live works everywhere in the universe, and that humans are how advanced civilizations always work. It's a similar mistake to the ones made by european explorers who discovered ruins on other continents: they assumed that they had to be built by ancient europeans, because natives weren't advanced enough. They couldn't imagine that different models of civilization could exist, because all they knew was european civilizations.
what if we are the noisy neighbour from upstairs and they want us to turn it down
Wesley knows all about alien life being kidnapped and anal probed over and over again during a camping trip.
If they have heard us but still haven't responded, there is a reason.
My best guess is that they won't until we test a Planetary Defense System, a sign of a space faring Civilization's Maturity.
So once they observe us testing Planetary Defense Missiles with small Thermo Nuclear Charges to alter the trajectory of Asteroids, they will rightly consider us as worthy of Observation, but not yet Mature enough to contact....
"Hey, earth. Do you mind? We're trying to do radio astronomy here!"
i always that that was Canada?
@@davidhollenshead4892 They havent heard us because they do not exist. Its ur precious government that want u to believe in Aliens. Its all stories. No, moving lights in the sky is NOT alien space crafts. Wake up people
If they're here or listening... good news for advanced civilization club. Means we may have a chance of making it like they did/do and will.
Humans have a long "ongoing" history of lies, stealing, violence/wars, military expansion and biochemical warfare. If there's any intelligent space aliens in the universe there's ZERO chance they would trust us. Logically since they know we can't be trusted it means we humans would be classified as a potential threat. This means the best case scenario would be those intelligent space aliens controlling and limiting our expansion in the universe.... and there's many darker more scary scenarios. Any intelligent space life would behave this way out of protecting it's own existence.
Knowing the best case scenario means the intelligent space aliens would be limiting and controlling our expansion in the universe.... yet thousands of people on Earth are providing them our exact location in the galaxy. It's like cooking cheese hamburgers and steaks in the African jungles for 5 minutes and wondering why no friendly animals have arrived.... Ohhhh they are coming and they won't be friendly.
i love these documentaries man your a great speaker
They decode the Phantom Menace and then..."What is this shit? This is terrible."
They Will think THATS our reality xd
'Astounding! How could they possibly know about our greatest historical atrocities?'
The Gaming Snake
They will show up and demand to speak with General Jar Jar.
Titus Veridius
'You wish to speak with one of our leaders who is a witless buffoon? Jar Jar isn't available I'm afraid, but we have literally hundreds of equally qualified examples.'
I am Lurr, of the planet Omikron Persei 8, and I demand more Single Female Lawyer
They're probably going to think we're as thick as rocks for watching the same re runs over and over again and consider us fair game.
There's no intelligence here on Earth.
Well done! Good information. Thanks for this.
That makes me think of the movie " Galaxy Quest"
I loved that movie
Aliens would not use radio. They use sub-space. duh.
So they just jumped from land lines to Subspace communication? Radio communication is easy and is more than likely going to be adopted by life around the universe due to how easy it is to use/discover.
No. They could have gone from land lines to fiber optics. We did. In only about 100 years. Our development of radio was extremely slow and depended on a lot of things. What if the aliens atmosphere does not do well with radio waves? What if they are aquatic or heavy gas? What if they developed the transistor or lasers before radio? Maybe they don't have mass media? Again... we moved from radio and TV to the Internet in 100 years. Maybe they skipped radio entirely. They went from telegraphs to digital cables and then realized that radio is too slow for these kind of transmissions and went to microwaves or visible frequencies?
Sadly, I left my sub-entha sense-o-matic in my other pants.
BW022 What they mean by radio is electromagnetics wave. all of the things you mention used electromacnetic wave (laser, optic fiber, microwaves) the speed is the samen all thats is the speed of light..
+BW022 There are situations in which no kind of cabling, fiber optic or otherwise, can be used. If the sender or receiver is mobile, for instance. Or on different planets.
What kind of atmosphere would prevent communicating by electromagnetic radiation?
And microwaves and visible light are the same kind of thing as radio: electromagnetic radiation. The only difference is frequency.
Great videos. thank you Matt O'Dowd
Excellent as always Professor O'dowd
I love this channel😁
Musky Elon You're not alone.
+Axel Andersson I saw what you did there, sir.
Isaac Arthur has pretty much convinced me that even at our technological level we'd turn K2 within an astronomical blink of an eye through sheer brute force. So the likelihood of there being an advanced civilization that's not K2 and indeed on its way to K3 is exceedingly small.
There are no aliens around because are all staying home watching I LOVE LUCY.
My thought exactly!
Imagine if we do get a message... and it is decoded to be something like, "Stop broadcasting, they might hear you".
That is entirely feasible. Not all aliens are friendly. Most are, but not all.
SRWill64 that’s a big assumption you’re making that most are :^)
I like that as an idea. Might even use it as a story prompt if that's ok with you. I'll credit you with the concept.
@@jackmack1061 I'm sure I'm not the one who invented it, look for Isaac arthur on youtube, his channel is the muse you'r looking for.
Why did you try to steal the top rated comment and think nobody would notice?
There is evidence of Omicron Persei 8 watching us in year 3000.
Futurama!
I might disagree with your notion of "evidence".
cpypcy There was a supernova in the Perseus cluster, Algol Beta Persei, though we can still observe it, it exploded 37 years ago and has become a demon star. Omicron Persei Aa8, has gone the way of Omicron Per Aa2, Persei Aa6 and Per Ab. From telescopes, we see it as a K- Type giant, with a constant dip between 2.1- 3.5.5 almost every 3 days.
cpypcy Idk that studio predicted trump. Single female lawyer-ocalypse is equally as likely
37 years ago, adjust for the distance 1100Light years.
Cylon warships are "welcome ships?"
No, thanks!
Cylons don't exist but some other aliens are just as bad. They have destroyed whole planets.
thanks for adding subtitles
Let's send out a signal to an alien civilization to donate to this channel with a generous thank you in advance.
Aliens would have been able to decode analogue TV (both picture and sound), if they'd received it with sufficiently low noise. The image signal screams "raster" just by its structure. Modern digital TV signals would present a much bigger challenge. With hope, aliens will not have seen too much of our more recent reality TV rubbish.
They are not interested.
at the very minimum, they'd at least get the audio decoded. because its just a regular fm audio signal. and then after decoding that, they'd surely spend heavy resources working on the image signal.
I don't think that alien could have seen us. But probing spaceships that they have send to our galaxy have detect our electromagnetic signal and come to us.
@@tonmaster189 Humans have a long "ongoing" history of lies, stealing, violence/wars, military expansion and biochemical warfare. If there's any intelligent space aliens in the universe there's ZERO chance they would trust us. Logically since they know we can't be trusted it means we humans would be classified as a potential threat. This means the best case scenario would be those intelligent space aliens controlling and limiting our expansion in the universe.... and there's many darker more scary scenarios. Any intelligent space life would behave this way out of protecting it's own existence.
Knowing the best case scenario means the intelligent space aliens would be limiting and controlling our expansion in the universe.... yet here we are providing them our exact location in the galaxy. It's like cooking cheese hamburgers and steaks in the African jungles for 5 minutes and wondering why no friendly animals have arrived.... Ohhhh they are coming and they won't be friendly.
@@NTJedi Universe itself limits any expansion in a good way. All the problem in my opinion comes from technology form factor. Knowing how fast these thing translate to one side to other I couldn't imagine how precision and accurate for much power that engineering must be. So they must be apart from us naturally like nuclear reactors (which hold such a power precision) are far from the city.
Hey Space Time. Love the Channel!
this series is so awesome :)
Excellent excellent excellent video!
Just a thought here. Could some form of biological life develop a sense or ability hear and communicate with radio frequencies?
If this would be the case, could the the radio buzz sent by humans mess their sense of "hearing"?
Just imagine hearing a constant loud bleep around the clock. That would be nasty.
Kinda like whales and porpoises hearing all the ship noise we make...maybe they had enough and commit suicide by beaching.
perhaps tinnitus is actually not what I am hearing nonstop?
They could but they would need to be very large to detect radio waves.
If there were, our signals would be indistinguishable from background noise. The short answer: no.
i always think its wild to assume we're a 'young' technological civilisation, as we have no yardstick to compare ourselves to, and that we've been technically creating 'technology' since the ancestors of humans were smashing walnuts with rocks. and its also wild to assume that aliens will have receivers for our radio and light transmissions and will be actively listening. life could have a huge change of thriving on other planets for all we know, but there's a tiny chance that >the intelligent life is in any way similar to us even conceptually (silicon based life? cloud life?) >the life's intentions are similar to our own ("answering whether or not we're 'alone' in the universe" maybe exploring the stars is a very human concept) ETC. i think the chances of aliens creating anything capable of receiving our messages, or even using radio waves etc as a method of communication are so minuscule when we consider the universe of possibilities.
i think among the trillions of stars there exists a creature out there somewhat like us that's listening for our radios and lasers and shit. but i think between them and us there's a trillion other creatures listening for infrared beams or antimatter radio or something.
idk what fermi theory thing this is lol
like we're trying to bluetooth connect but our nearest sentient life is trying to wifi and the one next to them is trying to connect their ps3 controller. they just cant hear each other. 😔
but eventually our radio bubble will get to that one people that's listening just like us! 🥰
That's an interesting theory and one that I have come to wonder about myself. Is the reason we haven't found life outside of our solar system because we are strictly searching for life in our narrow definition of it? If we opened our minds to the idea that it is possible life exists outside of carbon based lifeforms, maybe we could finally find extraterrestrial species.
In regards to the communication barrier, it is entirely possible other civilizations are trying to reach out to see if they are alone, but they aren't getting results because everyone is using a different medium. I found the analogy you used very humourous, btw!
Of course, we must also question whether or not it is wise to put ourselves on the galactic radar when we have yet to venture beyond our home world in the effort to colonize another planet. If the first species we meet are conquerors, it would not be very difficult to fight a species that lacks the means to effectively escape their planet's gravitational pull, and our fate as a species would be up in the air. I could be blowing things out of proportion but to expect the first extraterrestrials we meet to be benevolent may be very, *very* naive. That said, we could encounter another species that genuinely just wants to know their cosmic neighbors.
Another question, however, is are they already here? It wouldn't be that difficult to surmise that a technologically advanced species intercepted transmissions, decoded them, and is now actively monitoring our species. Some theorize that we have been getting visitors from the stars for generations, and we are only now realizing that folklore and ancient depictions of what our ancestors called gods may in fact be misunderstood contact with extraterrestrials.
If you've read this far in my comment, I hope I may have sparked some inquisitive thought on the part of the reader, and wish you a blessed day. 👋✌
wait wait wait start from the beginning
Reading this felt like a fever dream
Bog Creature now I’m just think of a planet of Aliens holding ps3 controllers looking for radio signals lol
@@snc237 lol
Great video, amazing channel!
Any Civilization that can view our digital TV Signal would be astounded of what we've done to each other, they probobly wouldnt want to come here; we are extremely violent when we don't get our way.
Someone, somewhere - I forget who for I read it in my youth - wrote a short story about an alien civilisation which found our remnants after we'd died out. They found a movie, worked out how to play it and were amazed at our ability to defeat gravity and other stuff of that nature. At the very end of the movie it said 'A Walt Disney Production'. They'd been watching Mickey Mouse. And who was it wrote a first contact novel where the aliens' introduction to Earth was the Berlin Olympics? Carl someone or other.
This mans accent and hand gestures are the best part
With the sound down, he looks like a hostage pleading for his life.
Well if some alien came after seeing Phantom Menace...
We are fked.
What an amazing show, i wish i could donate something to help.
Man, I've been waiting since the 90's for SKA to come back in style.
I get the impression that the russian space-based radio telescope RadioAstron aka Spektr-R kind of seems to be ignored by a lot of scientists. Together with earth-bound radiotelescopes it can form a huge interferometry baseline of 350,000km. So in terms of baseline it simply dusts everything, even the upcoming SKA.
How long would a sorry if our Star Trek depictions of aliens insulted you message take?
Depends on how far away they are. And we're going to need one heck of a laser. Which is going to make them think we have Star Trek like technology and yeah not good.
First message from an alien civilization:
"Stop being so noisy!!! Do you have any idea what time it is!?"
You are the one that will take us beyond the speed of thought " lights on folks.
But what if they aren't using any form of radio waves and use something like quantum entanglement to communicate with their colonies. China launched quantum entangled satellite in hopes of further research in quantum entangled communication. Not to mention, we overselves are increasingly using Internet for TV or radio, not radio waves. So the chances that they are sending radio waves seem far less and receiving radio waves to be slightly moderate (research purposes only).
Somebody might have already said this, but isn't this actually the solution to the Fermi paradox meaning there isn't actually a paradox at all?
PS love Spacetime
I love this episode.
My God mate your'e clever. I consider it a honour and a privilege to be around on Earth at this time and so be informed by people of genius such as your good self
"Welcome ships?" rofl
We were made by the universe to understand itself
16:43 THE BEST MOMENT IN PBS SPACE TIME EVER!!!!
The "wow!" message must be a response to any video humanity broadcasted
If our own technological progress is representative of other civilizations, then radio brightness may be just a passing blip. That is due to our radio communications becoming more efficient, using less power, moving toward higher frequencies and narrower beams, and use of digital modulation schemes (spread spectrum) which resemble noise. Additionally, over the air broadcasts are being replaced by wire or fiber delivery methods. Satellite radio and TV broadcasts use only a few hundred watts and are directed into a well defined footprint on Earth's surface, producing only feeble reflections into space. Even the use of planetary radar will become unnecessary as increasing numbers of planetary probes are sent to map and monitor the other planets in our solar system.
Edit: this means that unless we transmit persistent, targeted, high power beams designed to be detectable and decodable, another civilization will probably not be able to "see" us. The same applies in reverse: we would only "see" radio signals from another civilization if they deliberately targeted our solar system.
Finally, someone who knows what he is talking about. In my estimation there is only one way to find another civilization and that is their radar leakage. But at some point that will get replaced by something more suitable for travel beyond a planetary systems boundaries. So if they are 1000 ly away and we receive their first "1950s to 1960s" radar leakage they are almost 1000 years ahead of us, or gone from natural or artificial disasters. As for the former, probably have better things to do than repeatedly bumping into our own planet as the History Channel would have you believe.
The premise is unimpressively pedestrian. Earth has been an oxygen beacon for a billion years, something even we can detect. And the time scales are such that probes could explore everything at row boat speeds. Of course they were always here. They are here now.
Humans have a long "ongoing" history of lies, stealing, violence/wars, military expansion and biochemical warfare. If there's any intelligent space aliens in the universe there's ZERO chance they would trust us. Logically since they know we can't be trusted it means we humans would be classified as a potential threat. This means the best case scenario would be those intelligent space aliens controlling and limiting our expansion in the universe.... and there's many darker more scary scenarios. Any intelligent space life would behave this way out of protecting it's own existence.
Knowing the best case scenario means the intelligent space aliens would be limiting and controlling our expansion in the universe.... yet here we are providing them our exact location in the galaxy. It's like cooking cheese hamburgers and steaks in the African jungles for 5 minutes and wondering why no friendly animals have arrived.... Ohhhh they won't be friendly.
@@NTJedi They were always here, it's not a new discovery. They were here 100k years ago. A million, a billion.
Why am I imagining an alien spacecraft arriving full of advanced aliens who just came to say "hey, kids, shut the hell up, we're trying to sleep!" 🤣
Loved the BSG reference :D
Said by menu people before I'm sure but...If you are alone in the jungle; is it really so wise to call out..?;)
Well ,I for one would like to see a tig--OH SHIT !
The sound I made when I saw this in my Notifications Tab was a cross between a giddy child's squeal on Christmas morn and a Velociraptor's mating call.
Ska is back and better than ever
I imagine an alien visitor coming by like an angry neighbor. Giving us the equivalent of "knock it out with the noise already!" and then leave again.
QUESTION!:
Could it be possible to build an interferometer across multiple planets? Example, "linked" telescopes on Earth and Mars. Pending that, (and assuming the signal strength is constant between the two setups) does the size of the "anchors" of the interferometer determine the captured resolution of the signal or does the spacing? Lastly, would building one with 3 anchor points instead of 2 be beneficial?
PS: shoutout for SETIatHome
Harlan Kempf Yup that's possible, they're already using a space-based telescope for interferometry. ( RadioAstron, 340,000km Orbit). All you need is a precise time reference when you compare the datasets from all telescopes used.
From what i understand, the spacial resolution of an earth-mars-bases interferometer would be great, but in order to see faint objects (like TV-transmissions from aliens) you still need a huge collection area.
Harlan Kempf Wouldn't it be better to just build one in space?
Serah Wint Probably. This was just the first example I thought of.
dabeste Ah okay. So a larger-spaced arrays provided better resolution and "noise-cancelling" but not the required throughput to sift out a specific frequency enough to listen in.
It would be vastly more efficient to build such telescopes in space. Then they could be light gossamer structures and the same amount of material could build a hugely bigger dish. You probably would want to build at least 4 and send them out to places in our solar system where the constellation resembles a tetrahedron for the mission's lifetime and allows for an isotropic view of our stellar surrounds.
so i understand now the reason aliens then wanna kill us, to SHUP UP so they can listen the early universe xD
It's like when you're trying to study but the neighbors keep blasting music so loud it makes your windows vibrate
Naaa., Just interrupted the "Rich&Shameless"!?
I've been wondering for the longest time where I can donate my money for the purpose of scientific research, human advancement etc. Just started my first monthly donation to SETI. Thanks PBS for your videos.
We could search in the water hole but we’d have to take Zazu with us.
What about civilizations that can observe our whole physics as we observe the Mandelbrot Set? :) #BAUniC
Why are there no left handed Jedi knights?
dimduk because leftys are the devil.
because leftists tend towards communism and communism isn't sustainable and always fails
***** uhhh nope...
Luke is left handed
Because they wipe their asses with the left hand
Best channel ever!
Shower thought: A space faring civilization could encounter the edge of our broadcasts, and move towards the epicenter of it faster than light while rapidly learning all of our history. :O