Go watch part 1 and 2 of the Shadow Imaging videos and subscribe to the Cool World's channel: kzfaq.info/get/bejne/abdmqLKFlp2laKc.html kzfaq.info/get/bejne/d66hlNxh2Lm0nn0.html And here is the paper: "Shadow Imaging of Transiting Objects", Sandford and Kipping, 2018.: arxiv.org/abs/1812.01618

A nearly 50 minute long video about space that is not reuploaded clickbait and is uploaded by a knowledgeable host with nice graphics and last, but most importantly, original content. I can't believe I haven't found your channel earlier. Subscribers +1

We should definitely announce ourselves. They'll either uplift us or put us out of our misery. Either way, win-win.

Love the spacy background music. Not too loud, not too quiet, perfect

Thank you for another great interview! I really like the new event horizon format.

Hey it's David from Cool Worlds :D I already follow his top notch work on his channel, was happy to see him on here because Cool Worlds deserves more subs.

Dim your lights people! Earth is on stealth mode now.

Merry Christmas JMG, really looking forward to watching many more from this channel.

These are the videos I want to see on KZfaq glad I found u jmg your def make my day man I remember watching pbs spacetime and your video was in the recommended list you where at 4k subs..amazing to see your growth and aswell seeing you make this amazing platform (event horizon) for long videos keep it up your making the younger generation (me) dream of the stars! Also just got supermind off Amazon!

Thanks for the referral to check out cool worlds lab! I hadn't heard much about Dr. Kipping before this, besides the name every now and again, so I'm thrilled to check out more of him!

John, I think this was your best EVH production yet. You added a lot of structure and context to the program with your well written introduction and conclusion. It was a good balance between free form exploration and directed questioning. I also enjoyed listening to multiple guests weigh in on the topic. You were able to inject some of your own word smithing from your other channel into the new open format, and it really increased the quality of your presentation. Sean

Advanced aliens: Oh look! How cute! They're trying to hide!

This new method to detecting a Techno Signature is by far my favorite! I think Dr. David Kipping is going to be famous for detecting the first advanced Alien Civilization in the Galaxy, if there is one and they are not trying to hide from us that is. Merry Christmas to all!

first time I've watched the new format and its a big jump to change from what you did to this new way of doing things. but you've pulled it off and it was a pleasure to watch. well done mate keep up the good work

John is an amazing communicator!

As always, great show!

I love your other channel for the writing and scripted format, but Event Horizon is really engaging and your guests are always fantastic! Hope you keep them both going strong with equal attention!

Love your presentations, so well thought out. Thanks

Fascinating stuff. Thank you Mr. Godier for all you're doing.

David Kipping is ridiculously beautiful.. its hard to believe he's a research scientist. He has the face and body to be a movie star with a brain that is second to none.. a rare breed indeed..

...all this, and lovely intro music

My guess is that the object is two superjovians in close orbit with each other, not quite a rocheworld This immediately brings up several important points: 1) If the object is as large as it seems, is a dyson object or two superjovians, or something similar, it would have enormous mass, and would make the star wobble. Has anyone looked for that? I would think they would leap to find out. If nothing is found, then a comet cloud is much more likely 2) There is an ocultion technique that blocks out the glare of a parent star in order to see nearby objects. It has been used to directly observe brown dwarves. This object appears to be much larger than a brown dwarf, if they can see a brown dwarf, they should be able to see this. Has anyone looked? 3) I know that gas giants are strong radio emitters, but are hard to distinguish at interstellar distances. If two gas giants are orbiting each other wouldnt they make an oscillating gas giant radio source? That should be much easier to see. Considering how common gas giants are, how common gas giants that have become large enough to be small visible stars orbiting a large parent star-sometimes even two small stars orbiting each other as they orbit the large parent star, and how common moons are, there should be lots of gas giants orbiting each other. Have we run into another Fermi Paradox?-we should be seeing them, but we are not, where are they? Or has nobody thought of this? A new exoplanet hunting technique? Back to my two superjovian rocheworld: I have already stated that two gas giants orbiting each other should be common. This discovery may not be an accident, or extremely rare. Look at enough stars, and a relatively small number at that, and this should be discovered. The rocheworld concept seems to be popularly applied only to small rocky planets like earth, but obviously it could happen with gas giants as well. Rocheworlds assume deformation from their mutual gravity, this would be different with gas giants, deforming much easier with their gas->liquid composition. An orbit outside Roche's Limit but still close enough to deform might result in two wiener shaped planets orbiting each other around a common center, with a gap in between. They would form two linear gravitational sources, rather than point sources like regular planets. What would happen to their Lagrange points? L1 would be between the two planets, but with linear gravitational sources, would L1 be linear as well? L2 and L3 would probably be inside the outer length of the planets. L4 and L5 might also be linear, forming a cylinder or sphere connecting the two planets. If they acquired gas from the planets, these "Lagrange Corridors" could get enough to start to compress internally from their own gravity, tightening up into harder cylinders. And if they have their own gravity, then they can have moons, or more likely, rings. I envision something that looks like a soccerball with wieners sticking out opposite each other, with a sombrero hat around the middle. This object would be enormously larger than the planets themselves, would have mass less than enough to form a star, yet cover a lot larger area and block a lot of light, especially with the rings face on. As these planets are orbiting each other, then this object would be rotating, presenting different amount of area to block light as it rotates, which is what is seen with Kepler. What would we name this object? I throw out "Tabbyroche" (Tabbyrose). Whether this star has one or not, it seems appropriate to me. gas giants are prolific, they seem to be everywhere. Double planet gas giants should be all over the place. If you look at triple star systems, there are those that the two minor stars orbit in independent orbit, as if Jupiter and Saturn had become stars. And there are those that have the two minor stars orbiting each other, as if the earth and the moon had become stars. The ratio of each might transfer to gas giants, and give us some idea of how often gas giants orbit each other. Whatever the ratio is, it is certain that it happens, and commonly, just as triple stars with two suns orbiting each other are common. we can see how much distortion our 1/9g 1/80 mass tiny moon applies on our rocky planet and oceans from 250k miles, 28 day orbit. Two gas giants with much greater gravity, similar mass to each other, at a much smaller distance and period, and the gas->liquid composition of gas giants allowing almost frictionless movement of vast amounts of material, would certainly cause huge distortions of both planets. It may not be a rocheworld, but the distortion would certainly be in that magnitude. This has been observed in close together binary stars, they form Roche Lobes, and transfer mass in this manner, formally called Roche Lobe Overflow RLOF (Rochesuns?!). The distortion would be certain, and the shape of the pair would be asymmetrical. With two planets it might look like a couple of ovals or teardrops, or something else. I dont know. Lagrange points are real. Jupiter/sun L4 and L5 have huge amounts of material in them. In a close double gas giant situation, L4 and L5 would be close and in tight. If the planets are distorted, so would the Lagrange points. This is certain. If the planets provide material, the distorted L4 and L5 would fill up in the distorted shape. And these filled distorted Lagrange points would produce effects of their own The only things that are uncertain are the final shape and whether or not Tabby's Star actually has one, that the object blocking the light is this.

Great show, thank you John! The last part, about planet cloaking, was really food for thoughts for me. We should never forget, there is allways a bigger fish in the ocean - and even those get eaten by man. I do hope we have a headstart, would be a comforting thought.

JMG, you need to invite Dr. Kipping back and ask him about Type F stars and its planets suitability for life.

Such an interesting video, so fascinating, thank you so much.

Love your channel, from one John Michael to another.

Thank you John. Tabby star is a true wonder. Happy Christmas to anyone who reads this comment

I’m pretty late here but I hope John sees this: When I watched this episode and saw that the object eclipsing Tabby’s star is a semitransparent, ringed structure, I immediately thought of the 1984 paper by Robert L. Forward (link below), where he describes a giant Fresnel lens used for propelling laser-driven lightsails over interstellar distances. When I look at Forward’s drawing side by side with Kipping’s plots, it’s almost uncanny. How consistent would a supersized Fresnel lens be with the data on Tabby’s star? pdfs.semanticscholar.org/25b2/b991317510116fca1e642b3f364338c7983a.pdf

YES 45 minute video. Going to make a cup of tea and enjoy this.

😯 whoa..that’s a pretty mesmerizing presentation you got there. Nicely done

Loving all these videos and all your guests!!

Really enjoy the relaxed conversational style...& learn something new every day

🎯Tanks for this excellent Christmas gift🎅

Bloody great stuff

I hope JWST (when it finally goes up) will help answer some of these questions. Merry Christmas, John and Anna - and viewers!

Nice I just found this channel! Music can wait, I'm gonna listen to this stuff brother! 💎

Great interview John~ I guess you could say the ending took a turn for the worst though, be nice to Anna~ ;) Merry Christmas~🎄

Love this topic! Thanks :)

I loved that hacking our biosignature bit

John, have any planets been found orbiting Tabby’s stars? If we have found planets, we could see if there is artificial lightings.

Thanks for the informative interview.

Something I find charming to think: is maybe Tabby's star has a planet that's just gone through a major collision (that many light years ago), like Earth maybe did when Theia collided with us to form the moon. And maybe we have a chance to watch the evolution of a star system with a planet similar to ours.

IMHO best show yet very thought provoking thanks

Have spent the last couple of days on my time off Googling Physics and Science breakthroughs for 2018.

I listen every night. This show is like soup!

what a bloody great KZfaq channel

Not artificial definitively, but certainly this image keeps the option on the table. Dare I say, there is a possibility that this may be the 1st image of non-terrestrial artificial structures but of course it's way too early to truly know & alot more data is required. It'd be interesting to find out if the other group of stars that show similar luminosity patterns comes back w/ the same or similar verticle ring image.

I come for Anna bits, and stay for the science.

As usual, above and beyond expectations! Thank you so very much and happy holidays to you and yours.

Great episode John! Merry Christmas to you and your possessed LeBaron! :)

The thing screams Dyson rings.

I love that you have the scientific paper links in the video feed. Thanks for doing that and promoting science 😅

Love your work!

Cool. Please push the edge more with more interesting bleeding edge science. I like hovering around the fringe stuff a little bit but there are lots of interesting discoveries that haven't been publicized much if at all. I'm surprised I don't see more people I recognize watching streams from Deep Astronomy or Harvard's CfA Colloquium. There are some really interesting things that would be nice to hear about from a much more laymen friendly angle. I struggle to follow half or more of the stuff on CfA, but there is a lot of potential to explore if this stuff was broken down further. As far as predictions of the near future, I think we are on the precipice of science telling it's own story directly. I think we are going to see a lot more efforts made with direct public outreach and communication largely due to the digression of corporate media outlets.

Amazing! Merry Christmas everybody

Great interview man, really enjoyed it. Could you maybe try to get Massimo on to discuss upgrading the HST from orbit? It's absolutely fascinating the amount of preparation and logistical challenges that had.

making a super strange weird unexplainable shadow could be a pretty efficient way of broadcasting an unnatural presence across the universe. i mean it would take a long time and if it is just dust, then also upkeep, but still. sp00ky!

Nice Audio, the whole production is awesome. I was avoiding Event Horizon, but I'm getting hooked now. Damn you JMG ... Music reminds me a lot of EVE Online. Fucking awesome game =D

Tabby's Star (also known as Boyajian's Star and WTF Star, and designated KIC 8462852 in the Kepler Input Catalog) is an F-type main-sequence star in the constellation Cygnus approximately 1,470 light-years (450 pc) from Earth. Luminosity (bolometric): 4.68 L☉ Observed separation (projected): 880±10 AU B−V color index: 0.557 J−K color index: 0.264 decodes with my SSN number

Is there a Spotify playlist for your podcast please? I love listening to it before sleep.

For 2019, I predict that Ancient Alien Theorists will say yes to EVERYTHING asked. O.O On a serious note, this was a very interesting interview. Thanks to both you and the Professor! Keep up the good work!

Thanks so much

I didn't recognize Dr. Kipping's name, but as soon as you mentioned "exo-moons" in the intro, I immediately thought of him and his "Cool Worlds" channel

Probably the best one so far. While I enjoyed Isaac A here, this is so much more my bag.

A ringed stellar cloud? That would be interesting as a solar system that failed due to lack of enough material.

Listen for a signal from Tabby's Star saying "pardon our dust"?

Perhaps the variations in the light curve can be explained not only by rings of dust but also some large chunks of debris in the mix. These would not be round objects so they are always presenting different shapes -- casting different shadows, thus explaining why the occasional larger dips in the light curve can look similar but never identical?

Happy Solstmas! may your days be brighter!

Happy holidays.

If they were that advanced over a millennia ago, imagine what they’re like now

Merry Christmas JMG

What a cool intro!!

I have only one prediction for 2019: most common spellcheckers will be updated to recognize Oumuamua.

Thank you

Here we go

Thank You for yet another interesting video. We should not forget New Horizons flyby at new years day, days are ticking! Also, what are you thoughts about James Webb Space Telescope and what mysteries it might unveil? I hope that Tabby's star will be one task for JWST and that it will _confirm alien megastructures_... :-) Happy holidays and greetings from Sweden.

And merry Christmas event horizons people!

Once again mind blowing ,thanks john..

Now that's off the table? I'm curious does anybody know why the updates that used to come every month showing the dimming of tabby stars no longer being shown?

I would like to propose this tentative hypothesis (in the light of the Cool World's shadow modelling suggesting spiral or ring dust structure). If Tabby's pole were aligned with Sol, such the transit dips are superfine dust trapped within the star's magnetosphere 'funnel'. Two or three super clumps of dust rotate within the funnel, the outer limit diameter of which is much greater than the star itself, so the dust spirals are quite cool and only cross Tabby's polar region intermittently (possibly with some periodicity, but variables might creep in if Tabby wobbles on her axis).

I have a question for David (and Emily, if she's reading): if the dips are due to comets or rings, there's probably lots of gas in addition to dust. Is it surprising that we haven't detected molecular absorption from the gas?

Best channel?

Would the light flux at Tabby's Star make sense if the star AND the debris disk that occludes it were both orbiting a central non-visible object like a black hole?

Looks like Anna is pulling a HAL.

73000 is a pretty low number for a video like this thats been out since December 2018. Very fascinating. VERY !!!

I would love to have an '85 LeBaron.

we love to see it

I was under the impression the shift in the light around Tabbys star was not predictable, irregular... I wonder if it is some kind of ring system or something in the nature of massive amounts of gas or dust where there are planets around it causing it to wobble but on a slightly tilted plane which we can only see once it wobbles to our line of sight...

very good video, looks like a good new channel as well, glad that I watched thank you.

Vertically expelled (up and down, with respect of the plane of the asteroid belt) dust plumes (to minimise clogging of the extraction processors). The concentrated area corresponding to where the foci of mining is centred (the outer regions of the central 'sphere' correspond to where the mining is newest, so the dust plumes are lower). The dark areas at the top and bottom correspond to where the dust plume is bent by the gravity of Tabby (over the poles) so creating concentrated patches relative to line of sight (Sol). The plumes effectively appear as rings due to the time function of the asteroid's belt's orbit and (possibly) the geometry of Tabby's gravity / magnetosphere. The mining is focused at different points, hence similar dust structures. Mining processing probably exploits hydro jets, as the dust is expelled micro water droplets freeze, not only keeping the infrared to a minimum but also creating minor brightening (backscatter) events.

"You guys have black friday too?"

I think we will find intelligent life in 2019. Brave prediction that matches my hope for humanity.

It reminds me of the gas taurus system in, The Integral Trees. Great book.

I can't really imagine how an advanced civilization could hide the gravitational effect that their planet (or any planet) has on its parent star, so that we wouldn't see anything using the radial velocity method.

Is there a distance in light years at which astronomers, exobiologists, and others, who are interested in alien life, would not expect to see obvious signs of life because the stars would be too old (i.e. Population ll). How far back does this time go?

Europa has an Aquaman-esque civilization beneath its icy surface! :D It's believed abiogenesis could need organic compounds to go through repeated phases of getting hydrated, drying out, heated and maybe cool, rinse and repeat, to cause the necessary catalytic reactions. Such instances will be common throughout the galaxy/universe. Life IS out there, NO question!!

Here's a tinfoil idea for you. What if the planet in the center of the 'rings' is made of iron? We have already found multiple planets that defy explanation and an earth-sized world made almost entirely of iron is hardly the craziest. If possible it asks another question: Could this planet be artificial? An earth-sized planet of metal would be denser and have greater gravity than you would normally expect for a body that size. And if you really want to get crazy: What if the 'rings' weren't dust but solar collectors? Not collectors miles to a side, as they are so often pictured. But only about a meter or two each. You could build millions of them and it would be far easier and cheaper.

I've been hearing a lot about the "electric universe" perspective. What if the separations are the result of very strong electric/magnetic fields? Maybe a super-fast rotator of some kind?

Is Dr Kippen from the midlands in the UK?

You shouldn't have let Anna watch Knight Rider...