Can They See Us? With Dr. Lisa Kaltenegger and Jonathan Barrientos

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Discussing a new way to search for the vegetative red edges on exoplanets, and how this same method can be used to look for life completely unlike our own.
In Search of the Edge: A Bayesian Exploration of the Detectability of Red Edges in Exoplanet Reflection Spectra
arxiv.org/abs/2301.01775
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FOOTAGE:
NASA
ESA/Hubble
ESO - M.Kornmesser
ESO - L.Calcada
ESO - Jose Francisco Salgado (josefrancisco.org)
NAOJ
University of Warwick
Goddard Visualization Studio
Langley Research Center
Pixabay

[@troubletonez]

A whole hearted thank you from those of us in developing countries, where these subjects are simply not taught. You John, and your guests, are helping me educate my daughter and I am grateful.

[@liam3104]

Lisa's voice is dripping with enthusiasm and passion. Love to hear it.

[@ugiswrong]

I wish women just weren’t so sultry all the time, just talk, don’t sell it

[@rebellion-starwars]

I seen Lisa from the first page because it's a first comment and I thought Lisa? Isn't Anna, not Lisa 😂 but I got it after 10 sec 😂😅

[@pollywog7625]

@@ugiswrong I wish men weren't so oversexed that they thought every word a woman says is a sexual flirtation all the time, just listen, don't embarrass yourself by speaking

[@TheSCPStudio]

@@pollywog7625 well, it's completely natural to be attracted to a woman's voice. Thats how nature is. Sounds and appearances attract one another within species. Thats why mating calls are a thing for some animals. Were basically civilized animals. So shame on you for trying to shame someone for their natural instincts. However we ARE civilized animals. So the original commenter should have just kept the comments about her voice to themselves. Both of you are wrong in this scenario. :)

[@StevenBara]

I'm like... Wait Anna is doing interviews now too? 😅

[@andrewpayette621]

I loved how you and Lisa were so encouraging of Johnathan's cool work. You could tell he was anxious during this conversation but it didn't detract at all from the substance. Great job to all of you!

[@rebellion-starwars]

Oh this is going to be banger. I didn't listen at the podcast edition and I was waiting to go in the bed before I listened. So now it's my favourite part of the week, in bed and listening event horizon! 😊

[@666Eva]

Me too. What a voice this man has

[@srenpedersen5862]

Ind this hard times. All we can do is too look to the night sky and wonder.

[@DrBrianKeating]

Phenomenal conversation

[@grantwtk]

Shout out to Eryn for voicing and demonstrating the SquareSpace ad brilliantly. As a result I watched the ad closely.

[@gorbachevdhali4952]

Great episode, John. I love Dr. Kaltenegger's enthusiasm and sense of humor!

[@shanecreamer6889]

Excellent session, and great hosting as always!

[@sapphirecampbell-wh7iy]

Idk how to explain this but I have been watching a large enough volume of Godier's videos for a substantial amount of time now and i trust this man, I care for this man, and I see him as a mentor in some ways since I don't have that in my own life much. I have always been a writer and a deep lover of space since I was a kid and his videos have reignated certain passions I had previously mourned losing as my life developed. Thank you John, I will never stop watching.

[@TheMarcusrobbins]

Great job not letting Jonathon get squashed too much! Great hosting, fascinating content.

[@t_xxic8814]

Frau Kaltenegger, es ist mir eine Freude Sie in dieser Episode hören zu dürfen. Wonderful that you have the first Austrian scientist on your channel (as far as I know). Greetings from Vienna! 😊 edit: I didn't know Lisa Kaltenegger has been a guest already. I have to look that episode up right after this one.

[@EventHorizonShow]

This is Dr. Kalteneggers second appearance on the show.

[@t_xxic8814]

@@EventHorizonShow Just heard it. I have to look that episode up right after I heard this one. Thank you so much for you content.

[@justinwalker4475]

@@t_xxic8814 keep up :)

[@DavidEvans_dle]

JMG-"Wait a minute WHAT? " LOL JMG just got the need to know -until publication response.

[@brunov958]

I could listen to this lady for hours... she is so full of enthusiasm

[@Dmarcoot]

I’ve expected this would be true for a while now. It’s great learning it’s actually possible. Aliens could have known life has been here for millions of years

[@matthiaszapf1171]

if we can see the universe. why should not some else be able to ? and our technolgy isnt even that much developed.. we are still an infant when it comes to cosmic age. and just the fact that our own eyes are only seeing like 0.1% of the "stuff" that can be seen, it tells you that there is so much more out there. dark forest > fermi. look at out planet. how we enslave this system , how we butcher it. you think any other civilization will be better ? it is survival of the fittest. still. everywhere. but for is its capitalism. what does peaceful even mean ?... or why is it a word ?

[@matthiaszapf1171]

and there is life out there in the universe, look at earth , look at the diversity if life, as if our planet would be the only one.... hi iam the only one in this universe , look at me , iam special (counts for every human)

[@Eva_xoxo]

why haven't they sent a probe to us then?

[@dougr8646]

Who says they haven't? Sent a hell of a lot more than probes

[@huemann7637]

@@Eva_xoxothey could be millions of light years away.

[@rebellion-starwars]

This is one of my favorite episodes, I listened about 7 times for sure.

[@stricknine6130]

Good interview. I know I have probably said this before, but I love the background music you pick for your episodes. Thanks!

[@umer.on.youtube]

💯

[@ulfhedtyrsson]

She has a lovely relaxing voice

[@pmajudge]

EXCELLENT !! THANKS ! HOST JOHN MICHAEL GODIER & GUEST DR. LISA KALTENEGGER & JONATHAN BATTIENTOS. FROM, U.K. (2023).

[@flushit.]

Such a great episode, fantastic guests. Thank you for taking the time and effort.

[@PatriciaOConnorBonsaiBalcony]

Hello Zorg,! I'm in the backyard waiving!

[@warrenalberts6321]

What a gem ! Good job.

[@reallyryan_]

Can't wait to watch this when I'm relaxing in bed, gonna be amazing 🌌🌌🌌

[@jlee1014]

Can’t wait to hear about the paper!

[@Aginor88]

I love this channel, I learn so much here.

[@wade8518]

I'm so excited! When do the papers come out?

[@philfarmintino11]

oh yeah baby .. i happened to look and john dropped a new episode. yaass!!! keep up the brilliant content sir 👏👏

[@samanthaqiu3416]

TLDR: of course they can, we live in the surface of the planet and we use massive scale artificial lighting. But even before technology they saw our biosignatures

[@AwsAlSamarrie]

Thank you

[@magos_0083]

You’re welcome… my son

[@amangogna68]

Great video !

[@ericb2017]

gosh she sounds amazing!

[@zaucy_]

JMG, the Spice Adams laugh at 12:35 had me absolutely crying from laughter 😂😂 great video as always Event Horizon. Love every guest you have join you

[@robertlang6225]

The commercial went on forever.

[@rjim1]

I've told you seventy million times not to exaggerate!

[@davidk7212]

There is sooo much, *ahem*, "tension" between John and Lisa 😉

[@alinandrei6484]

Everyone should read : Three Body Problem 😁 best sci fi trilogy ever !

[@mosaicmind88]

We need to hide our red edge immediately!

[@t_xxic8814]

If it's really the best, I think that's debateable, but it's one of my favourites as well.

[@magos_0083]

Just got into bed, time to fall into the event horizon 🪐

[@marccorbett4297]

Yay it’s Thursday 🕺🏻

[@transagenda]

Brilliant video! Amazing to know what the next generation of data might bring!

[@realzachfluke1]

Absolutely, it's a super exciting time in the _incredibly long history_ (and pre-history) of humanity...and we got lucky enough to be gifted our consciousnesses by the Universe (which *we* fundamentally *are,* as in, we human beings aren't a _part_ of the Universe, we ARE the Universe, just as the Universe is us) at a time that lets us witness, and be a part of this snapshot in time. We have all of our collective and individual struggles to deal with while we're here, there's no doubt about that, and I hope we continue (I know we will) to help and support more and more of each other as we're facing the huge political, economic, and environmental challenges of our time. I just hope that we never forget to look up from time to time.

[@nickpricey8689]

Nice it’s Thursday new episode of Event Horizon ☺️

[@EventHorizonShow]

Do you think Aliens are aware Earth has life on it?

[@Kuchtic93]

100% Edit: considering life on earth Is for couple billions of years... And detecting life doesnt mean you have to travel anywhere, just observe... Imagine, just in this moment, 3billion light years Away a civilization became So advanced to spot an earth size planet And read Its atmosphere properties So they know we have a life form... They May need to be a type 2 civilization fór that.. but if they became a type 2 civilization a million years ago.. we Will know in next 3billion years... Speed od light Is slooooooooooowpoke

[@juliandarch9278]

Not if they can't see us lol

[@fabiosplendido9536]

Which aliens?

[@David-xl2hq]

Im sure they can its good to have imagination

[@t_xxic8814]

As if in aliens = a technologically vastly more advanced civilization or intelligence than ours? Sure. Microbes under 4 km of ice on Venus? Nah. 😅

[@billcape9405]

I am encouraged by how many different people and groups are studying exoplanets and exobiology. Only 50 years ago, it was all just science fiction. In just my lifetime, we've gone from ridicule to "why haven't you found more?" I am curious as to how specific you can get in the red-shift exploration and how specific you might want to get. I know that different types of plants have different IR signatures. Also, using the Carl Sagan model of study (turning your sensors back onto the Earth), we not only have a model for IR detection, but can reverse engineer that because we know the actual result. The study process is verifiable based upon our known bio-parameters. But in this case, if you are looking for a forest, you might miss a tree. Anyway, another great discussion. Hi Eryn, good catch on that great pic.

[@RavenTD46]

I hope we find life before my time is up.

[@stevelenores5637]

They are probably following the comment section right now. LOL

[@scottymeffz5025]

This was so much more enjoyable than the political / Americacentric guests that have been popping up recently. It's your channel to do with as you please but enthusiastic & knowledgable guests who are talking about their area of expertise rather than what they think we should think is a far better listener experience in my opinion. 10x thumbs up & get Lisa back on!

[@Violence0vAction]

Awesome Sauce - looking forward to house sized cabbages

[@MCsCreations]

Fantastic interview as usual, John! Thanks a bunch! 😃 Stay safe there with your family! 🖖😊

[@Metaldetectiontubeworldwide]

Can they feels us ? Only conciousness can overcome Ower lightspeed restriction. I more as i get older , l I start to believe the answer..lies in a higher conciousness. For comunication ..and very non physical interaction Grtzz from the Netherlands Johny geerts

[@bobsmith-hd2zr]

woo woo

[@dranlan8093]

I love Lisa’s voice she can come and read me a bed time story

[@Rkenton48]

They take one look at us, roll up the windows, and drive away quickly.

[@riverrat7070]

So then we could see a planet blanketed in black-leafed plant life orbiting a red dwarf? What a strange and wonderous sight that would be!

[@dannybrown5744]

So....direct would be getting a spectrum from the back side.. when that Sun is shining on and reflecting from day side?

[@MajorBorris]

The lightspeed bubble for radio communications is maybe seventy five years. I'll now watch the video.

[@odiousmelodious2410]

There are some lovely voices on this show

[@element5377]

at first, amazing meant "caught in a maze" and "stupefied" or "dreadful" were the word senses, 15c. being caught long enough to die of thirst or starve was the extreme sense of the word amazing="to despair". my mind goes directly to stupefied or struck stupid whenever anyone says "amazing!"

[@Fylo-Kalist]

i would say if we ever "encounter" life outside our planet it will be either a. they are 2-3k years (god help us not more) ahead of us and pray they are peaceful because they find us. or b. we think it may exist because we continue to use "our" model....because it's the only model we know to exist...so we focus on it. We keep looking for us...we should be focusing on them. :D Edit...thats the fun part. we keep looking for us and i get it...but either we are absolutely unique or we are not. We are very special...or we are not. Hard pill to choose. That or we are lazy with no imagination (sorry hard truths). If you focus on us...it's because we are special and unique. Because to be fair, we are until proven otherwise. ...and that's why we keep looking for us. To prove we are not special or unique. ;)

[@vangelissotiropoulos7365]

European football?! ❤

[@Raygo.]

Just to allow Americans to understand it's not what they think of as football. I guess.

[@t_xxic8814]

I am European and I find neither interesting. Grown men kicking a ball on a field of grass or trying to carry an egg-shaped "ball" across a field of grass while bumping their heads with such feriocity that the chance of brain trauma is immensely high doesn't seem like something I would like to do or watch. Maybe I am just ignorant. 🤷‍♂

[@Raygo.]

@@t_xxic8814 LOL, agreed, but we're risen apes, not fallen angels. I believe sports allow many people to reconnect with our ancient hunter-gatherer past, the hunting as a team, the camaraderie. Or perhaps it's just war on a small scale. As a species, we seem to have a need for conflict and violence. It'll probably be our downfall.

[@Von_Daheim]

Just what i thought xD but what is this game that is played by so many african, asian, oceanic, australian and south-american people, must be something totally different.

[@t_xxic8814]

@@Von_Daheim LOL Well, Rugby is more or less American Football for people with no regard for their own or anyone elses health to me. ;O)

[@element5377]

early photo synthesizers may have been more pink, lavender, blueish or purple (not green). these types and colors of algae are prevalent deeper in the ocean where the light is weaker.

[@marklee1462]

Looking for life on other planets is the most important activity for use of jwst bar none quite why black holes and gravitational waves and other stuff gets more time escapes me.

[@jmo7185]

I am glad James Web launched and Jonathan got into his first ( maybe only ) choice of phd project

[@usnairframer]

It will really be an interesting day if we ever see that red edge from a telescope. Also, am I super behind the game here? I just noticed the 'Shop' tab. Has that Event Horizon merch always been there? None of the links seem to work 😢 How can I continue without my Event Horizon coffee mug?!

[@EventHorizonShow]

Links should work, will look into it!

[@usnairframer]

@@EventHorizonShow It may be my location. Perhaps the store won't let me order from Japan. The prices are appearing in Yen, but the buttons to "View on Spring" are greyed out.

[@douglaswilkinson5700]

Great surname!

[@usnairframer]

@@douglaswilkinson5700 Bro, did we just become best friends?!

[@douglaswilkinson5700]

@@usnairframer I'm an Aerospace engineer in SoCal. Also an interpreter -- Spanish, German, Swedish & Czech -- but my Japanese is limited. Our common surname means son of little William. The "kin" is Old English for "little" (e.g. napkin is a "little tablecloth") and is cognate with the German suffix "chen."

[@punkypinko2965]

Starts 2:52

[@MistaNimbus]

Lisa has the same sparkle in her voice like Anne Druyen

[@slayerx3197]

They’ve been seen for as long as mankind’s been keeping records. Of course they know we’re here.

[@vls3771]

It's veerry quite on the communication front ...absolute silence out there in space....great episode

[@Johnboy33545]

Bullshit. Who, precisely, are "they"? Do you have anything resembling evidence they exists outside your vivid imagination? No, none. Grow up and lose the gullibility.

[@shahruzpakzad8603]

I used to think colour purple is in the favour of life, more than green.

[@element5377]

purple, red, bluish-green, green, pink, and lavender are common algae colors

[@Johnboy33545]

Life as we know it comes in a variety of colors.

[@DenofLore]

They can see us as we were several hundred to several thousand years ago depending on their distance from us currently thanks to the laws of relativity and the fact space is so frikken huge.

[@Johnboy33545]

Hence we'll never have contact. Ever. "Frikken huge" is the issue.

[@allthingsdestructive]

Are there any known or inferred biochemical processes on earth that use lower energy red photons to perform oxygenic photosynthesis? Everything I've read about M dwarf stars' planets tells me that there are no known biochemical pathways that we know of that could take advantage of the energy transferred to a molecule from red wavelengths but if anyone has an example of paper they could point me to I'll read it.

[@DavidEvans_dle]

Wonder, if the red edge spectrum analyst has a high amount of methane signature. Does that mean perhaps the exsistance of vast herds of herbivores animals.

[@catrinamilbrad8218]

When Voyager reach Neptune they turn the camera and took a photo of the Earth a tiny little dot of blue and white floating in a dark starry vacuum of space

[@Johnboy33545]

Thank you, Carl Sagan.

[@williamblack4006]

I have to post this as a comment as the user appears to have blocked me. His comment is below. My reply: ​ @t_xxic The surface temperature of Venus ranges from about 820 degrees to nearly 900 degrees F. The average surface temperature is 847 degrees F., hot enough to melt lead. So, zero Km of ice on Venus.

[@element5377]

a type III civilization could have a galaxy spanning telescopic array

[@Bow-to-the-absurd]

The fermi paradox is usually talked about in terms of long timeframes. What about the perspective of the individual ? Who would want to spend decades travelling to other planets- Maybe no-one?

[@knickingaround7810]

If your sun is going to nova soon that would be a good reason to travel out. Maybe most aliens wait to long to travel out.

[@FUBBA]

If they see us then they can see this channel.

[@jedidiahhenry6020]

Then they better 'like and subscribe '

[@element5377]

@@jedidiahhenry6020 yes check your subscriptions, lol. I wouldn't be surprised if we are watched, even guided. intelligence meddles. I call BS on the prime directive.

[@davidschaftenaar6530]

I wonder: Can you tell biogenic carbon dioxide apart from carbon dioxide from regular old inorganic carbon dioxide through spectroscopy?

[@claudiaxander]

Yes, and we're so terribly predictable....

[@seanhunt138]

I was very nervous about james web launch if it was not successful it would have taken decades longer

[@richardlecomte4874]

Yeah...they can see us.

[@corydemeray7594]

where am i

[@afedden]

I heard 3 or 4 months ago that the JWST would announce they have found signs of life in the Trappist system in April 2023. If that turns out to be true then it involves algae?

[@element5377]

what else happens in the future.. when do the lions win the super bowl?

[@pauliusUwU]

- Source? - It was revealed to me in a dream.

[@afedden]

@@pauliusUwU I can't remember where I heard it. Just thought it was interesting to keep an eye on. I'm guessing that the time to look at the Trappist star system had already been booked well in advance of me hearing that.

[@Johnboy33545]

Believe non of what you hear and half of what you see. Twain, maybe? You seem to be a poor witness

[@Johnboy33545]

@@element5377: Never.

[@benparker2995]

I love that you say European football but what you mean is everyone but America foodball

[@wishiwasboosted7741]

Oooo

[@indenial3340]

Aliens would have to know we are here. We leave the lights on all night, every night!

[@spearthumb68]

Yes, God knows we are here.

[@Jay_in_Japan]

lmao

[@David-xl2hq]

Im sure they can its good to have imagination

[@jwilliamsmith9316]

If you tell the aliens how much we spend on war vs everything else we do don’t expect a return call in the near future

[@dnoordink]

How are you still having this conversation? 'They' are here and we've known about each other for multiple decades, if not centuries. Time to take the red pill?

[@JohnMichaelGodier]

Who is "they"? The UFO community can't agree on what "they" are. It ranges from UFOs being paranormal ghost lights, demons, aliens, ultra terrestrials, skin walkers and the crowd that thinks the only way to interact with aliens is by ingesting DMT. Yet in over 70 years of reports, no one has produced any smoking gun evidence. That's what we're waiting for. We need more than anecdotal evidence to conclude anything.

[@zapfanzapfan]

European football? You mean football, the game where you kick around a ball and are not allowed to pick it up... Space is much more exciting than sportsball 🙂

[@t_xxic8814]

Being European I agree. Soccer is boring. Most other ball games are boring. Space is infinitely more interesting. Except for NBA basketball. 😅

[@kevinbarr9003]

IF I were an Alien? Humans are the last MFers I'd contact!

[@richardlecomte4874]

Could we see us?

[@bobsmith-hd2zr]

The only way that would be even possible is if we just happen to be orbiting between the sun and their eyes. That is very unlikely. The only way we would be able to see earth's atmospheric composition is if we just so happen to see a transit, and that only happens once a year... So they would have to be watching for us year after year. Waiting for us to transit in front of the sun. so yes? unlikely but possible This is why we currently mostly detect giant planets orbiting near their stars. Big and with orbital periods short enough that if we look at the star for a few days we will se something change. These hot Jupiters tend to be way closer to their stars than mercury is to ours. So they would see something is weird in our atmosphere using spectroscopy. But if they/us are further than a few hundred light years we would only see bio signatures not techno signatures,

[@readytoworkboulder]

she is lovely

[@TWJfdsa]

😱😱😱😱ahhhhhhh theyre gonna eat usssssssss

[@iBaudan]

If we didn’t see anything in our galaxy, that means that if there are intelligent life on it I am sure they are as same advance or less than us. We should start thinking about other intelligent life forms less advance than us…

[@fabulamcafee]

have you read about the three body problem? if you don’t have time and mind spoilers, getting told about it from ytbers is also worth it

[@alinandrei6484]

@@fabulamcafee Three Body Problem is the best sci fi book ever , you should also read : The Killing Star

[@ishwarlxm6333]

Carl Sagan said there's nobody

[@richb2229]

If they are within 100 light years Yes they do. Much beyond that No they don’t know or likely care.

[@edgarburlyman738]

The Kalteneggers and Schwarzeneggers have been rivals for millenia

[@elmrjdhue6105]

Why can't we make a "lego" type telescope? Send it up in multiple complete pieces & "clip together." The better we got at it, the more pieces could be "clipped" together. Creating far bigger space telescopes with current rocket hold capacity. 🤷‍♂️

[@jtinalexandria]

Do they know it's Christmas?

[@Nik531]

"Looks like the aliens finally found us, let's just hope they're into our reality TV shows and fast food. Welcome to Earth, E.T.!" And also it Looks like the aliens are finally here, let's just hope they're not too crazy. I mean, have you seen the state of this planet? They're in for a wild ride.

[@madeovstarstuff]

Tut tut "European Football" 🙄 great listen as ever though

[@EventHorizonShow]

Eryn will not say "soccer" (it's in her contract). She calls football "hand egg" too.

[@voidstarq]

Q: Suppose, hypothetically, there is an "us" currently living on Proxima B. I.e., a civ. at exactly the same tech level as us. They launched their JWST, which is *exactly* identical to ours, just a few years earlier. If they've pointed it at our sun, what do they see, w.r.t. bio-signatures and/or techno-signatures? I mean, on a scale from... 1: "There's a planet about the same size as ours, which *might* have liquid water!" To 10: "There's all this radio noise in a few specific frequency bands... Huh, seems they've standardized on GSM and now the majority of their smartphones are using that instead of CDMA!" To 12: "Geez, that lunatic is *still* saying he won the election two transits ago!" ...what would our endoplanet look like, as seen from there with exactly the same instruments?

[@bertjilk3456]

JWST doesn't detect radio signals, you need a radio telescope for that. And, I believe most of our radio transmissions are too weak to be detectable above our sun's radio noise (using detection equipment similar to our own current tech). They might pick up some of our strongest radar transmissions, but not using their JWST. I'm no expert, but from what I understand, their JWST could tell them the composition of our atmosphere (including biomarkers), and potentially even that we have plant life (the topic of this video). Beyond that, I'm not sure how much more they would learn. So, maybe a 2 or 3 on your scale. I think they would see enough to convince them that earth has life (cue monumental celebrations) and that they need new/better technologies to take a closer look. Pretty much exactly what would happen here.

[@tyronealfonso]

I’ve been listening for a while and these are all starting to sound the same. I guess there’s only so much info for now.

[@EventHorizonShow]

Interesting. This interview is about a new paper with groundbreaking model for how to find alien life

[@kalrandom7387]

We're looking for alien life on different planets, yet we are putting the constraints of our life upon what we look for. Which version of Life on our planet are we looking for? Is it what's at the poles, is it what's at the equator, or is it the temperate zones, are we looking for high altitude or low altitude? We are looking for our industrial pollution? Maybe they're industrial pollution looks completely different from ours. Alien life is ALIEN to us, unless your looking for us on other worlds. Then it falls back to which climate zone are you looking for.

[@williamblack4006]

@ Kal Random, we are looking for atmospheric gasses -- i.e. methane, or oxygen. Earth's atmosphere is in dis-equilibrium, it has a very high oxygen content, much more oxygen than it should have -- this is due to the metabolism of plant-life. Climate zones have nothing to do with it.