you are so big now in retail, that you can't set rules for how companies price their goods elsewhere. and again, that sort of classic imp, anti competition law. that basically if you are the dominant player in the market, you can't abuse that monopoly. and that's the case that we're seeing brought not just here, but also in other suits that deal with things like how amazon sells its own goods versus those from 3rd party sellers. a fast growing wildfire in california has destroyed several structures and now threatened several communities. the so called mosquito far again on tuesday in place a county and was initially contained by firefighters is burned nearly 59000 acres. forcing the evacuation to some 11000 people. rescuers pulled a 4 month old baby girl from the rubble of a collapse building in jordan and continuing the search for others trapped under the rubble. at least 9 people have been killed and 10 were injured after the 4 story building collapse in

a man on tuesday. the public prosecutor has ordered the arrest of 3 people in connection with the collapse. ah. so this is out there are, these are the top stories and thousands of our medians are protesting against prime minister nicole passenger. after more than a 100 soldiers were killed in renewed fighting with our supplies, young accusing him of betraying the country after he said he was willing to sign a peace deal to ensure the security rule on top is would be cup. i officially state that no paper has been signed. moreover, no paper is going to be signed. there is no talk about any paper. this information as a conspiracy to demoralize our soldiers standing at the border. where gabriel gavin is a freelance journalist covering the conflict between armina and as a by john and he has more what's been happening in the area? well, i think these are some of the largest protests that you're about as seen in recent

years. and you've got a lot of people coming out turning up to the pilot building and chance going out, calling for the prime minister, nickle finance resignation. but i think actually the number of people who have a solution, which is, you know, we need a different leader when you different government is actually very small. lots, lots of people that certainly the ones i spoke to. they didn't know what solution to this complex days. armenia has come under attack. over the last few days, we've seen massive bombardments, huge evacuations of towns and cities along the border. and what people are really worried about as a repeats up to 2020 will where i mean, it was forced to basically give a whole lot of significant sway through its terrace, of territory was inside as a, beyond its nationally recognize borders. a sweden's prime minister magdalena anderson has announced she will resign. anderson center left coalition was defeated by right wing block in sunday election. motors filing past the coughing, the queen elizabeth the 2nd lion state at westminster hall for the next 4 days.

acute nearly 5 kilometers long, it's making through london as people wait to pay their respects. they can tell about him every day to the decision by the united states to transfer 3 and a half 1000000000 dollars in frozen assets to a swift base trust. the plan is for the trusted to distribute the funds when needed in afghanistan. the tell about and say the assets must be sent directly to the africa central bank. as their headlines, more news coming up right after the stream. ah, alger 0. great with no both.

what you're listening to our pressure waves from a galaxy cluster known as perseus about 240000000 light years away from earth. nasa black hole re max recently went viral online and it's fueling more and more interest in black hole science as well as it's mysteries. i am much have a dean, i can imagine like me, you have a lot of questions. so jump into today's youtube chat and you can be part of this discussion. ah, a black hole is believed to be the most extreme environment in the universe, an area in space where the force of gravity is so intense, not even light can escape. but how much does scientists really know about black holes and what their actual purposes? well, joining us today in connecticut, pm vida now to raj on a professor of astronomy and physics at yale university. and one of the principal

investigators with harvard university's black hole initiative in the us state of rhode island. kimberly are canned a data visualization science communicator for nasa, chandra, x ray observatory, and in new york state j. hon cartel to pay an astrophysicist at the rochester institute of technology, where she studies the evolution and formation of galaxies. thank you so much for being with us beyond feeling very accomplished after all those introductions. now i'm joking. so many interesting burning questions here, really, but let's start with the most fundamental. kimberly, what is a black hole? well, i think a black hole is a really cool thing and it's a really interesting thing and a thing of mystery. but in essence, i like to think of them as a dense compact object. his gravitational pull is so strong that within a certain distance of it, nothing, not even light can escape. and many of the black holes that we sort of know and love, i guess, or thought to be the result from the collapse of the very, very,

very massive star as it sort of gets towards the end of it. stellar evolution that's, that's a simple i, explanation that i can understand. i want to ask you though, a pre, a, you know, when we talk about black holes, there's a lot of misconceptions. there's a lot of maybe confusion of what it exactly is. so they certainly seem to help us understand how our galaxy kind of was shaped and formed. but what fascinates you most about? well, i guess, and kim just mentioned, right. so you can think of the black hole as a plea. so extreme gravity from which nothing can escape and there is this region sort of like a secret boundary if you're aware of the event horizon. so once you crossed the event horizon, nothing no matter not even light can escape. so what happens inside the event horizon is something that we don't quite understand this starting to understand it and figure it out. but we know that the black hole is actually in cases point that

we call a singularity. this is where all our knowledge of physics breaks down. and so for me, the fascination with black holds is that may be present the ash sort of the limits of knowledge, right. and so trying to understand them like, you know, and actually o'shea. yeah. not our minds as much as we possibly can. well, i mean that, that's certainly fascinating to me. i mean, my dad's a physicist. he spent much of his life trying to explain some of this stuff to me. i don't know that i got it but, but that's certainly it makes sense to me. i mean, so when you say singularity, that's the center of the black hole. this is where we don't have sort of the physics knowledge to really understand what's going on. is that correct? that's right, that's right. so our understanding our laws, right? nature has all of these laws, the symmetries and i everything kind of breaks down when we approach the singularity. interesting, fascinating j hand. when,

when we talk about sort of galaxies and, and how they've evolved. i know a lot of your research focuses on this. we have people in our live you to chat right now, actually asking some pretty pointed questions i want to share with you. one of them says the black holes lead to higher dimensions and maybe the most interesting one to me from solid cancer. it says, can you have 2 or 3 black holes that have joined together or merged? that's a great question. um, so my research focuses on galaxies themselves and how they form and evolve over time. but i'm especially interested in what happens when to galaxy merged together . and we think that all galaxies have the super, massive black holes in their centers when those galaxies emerge and become one. those black hole should also merge and become one. and just recently, we got evidence of this process through the gravitational wave detection by lego, which actually observed what happened as a result of this merger and the gravitational waves that are emitted that we can

detect all the way here at earth. and i see that that visual, that we're sharing with our audience. i just, it's like i see these things and it's fascinates me, but i, i fear that i don't understand just how fascinating it is but, but we have this headline as well. i want to share with you j. hon. it says a pair of super massive black hole could be faded to collide within 3 years. certainly sounds like something we should be anticipating is this doom and gloom? what does that mean? it's definitely not zoom in go for from our perspective, you know, we will see too much different. we, if we're lucky enough, we'll be able to detect gravitational waves from this merger and be able to study a little bit about the last moments before the merger. actually happens, which would be really useful for physics, but otherwise not too much changes from our point of view. it's certainly not doing good. and you know, we've, we've seen images we heard that found at the top of the show. kimberly,

i know you're working to kind of figure out in a sense, to put it in layman's terms. if we can make an image of the black hole and also with the sound, can you share with us the sound kind of what it is, what it means we were joking for we want to live to me. it sounds like you know, stranger things. it certainly sounds a bit ominous, but, but how are we experiencing the data that we're collecting? yeah, i'm a stranger fan, stranger things span as well. so i think i really love that analogy about the sound, and i've heard other people talk about how it sounds to them like, hm, we're a soundtrack or to sound like something from han zimmer. it's this idea. the son of occasion is, is pretty cool because it actually took an archive a result from 2003 on from andy fabian at all. and in that result, they had made this discovery that this massive black hole was just belching out into the surrounding environments. and those belch is, are sort of causing these pressure weights, or the sound waves in the hot gas. and so those sound waves we could actually

translates into a tone which was b flat, of about $57.00 octaves below middle. see. so way, way below came and hearing like hundreds and hundreds of piano keys below human hearing. and i think this idea that we could then take that to day and sauna fi it, sir, take that note that we know it's singing out into the universe and turn it into sound that humans can hear. was really exciting. because to me, it's a way to not only learn things about them, but also help communicate them to people. for example, who can't see someone who's blind or low vision. yeah, and that was part of, i mean that, that's, that's doubly fascinating. i think, you know, we want this show to be as accessible as possible and, and part of that means kind of breaking things down. we hear these terms like not even light can escape from a black hole and we're going to dissect out further. but for now, i want to share some comments that are coming through on youtube. we have neptune asking what is the nearest black hole to our solar system. and is it possible for them to collide with us in the future? a who wants to take that pre up?

sure. the new super massive black holes. right. all 3 of us are interested in these sort of over weight cousins of the little black holes that the legal collaboration caught colliding right? is the one of the center of our own galaxy and it's 4000000 times the mass of the sun. and i mean, i think the rest of your question was what year is 1 am? might they collide with us in the future? it's that age old question. of i think we, i say we're white say, and i think the one of the center of our galaxy is actually sitting very quietly. it's feeding on a very tiny trickle and it's largely deck for most purposes. but you know, it's fascinating. one for us. that's why you are showing up close image from the event horizon, telescope collaboration, which is and close as we will ever get to

a black. oh, interesting. well, i mean, you know, a lot of these questions i have to show them with you on you tube are kind of better than my questions or, or at least they're the exact same as my question. so here we go. buzz, buzz videos saying how can we learn about black holes if they trap light and can actually be seen now i see that you're nodding to hm. so i'm gonna ask, i mean, you know, we hear this, this phrase, not even light can escape. what does that really mean? and yeah, yeah, i'm nodding because that's a question i've heard a lot actually. we're trying to study something that we can't the, we're trying to understand the absence of light. and that's a kind of complicated concept, right. the video you showed earlier is all the sort of black spheres in the middle that are representing the black hole. so right, we can't see into those black spears, but what we can see is what's happening around them, how those masses are affecting their surroundings. so they're still interacting with things gravitationally, so we can measure things nearby them and see how their movement is affected by the

presence of something really massive. we can see how they're massive distort light . we saw that in that video that you showed and we can learn all about their surrounding environments just based on the material that nearby, right. if there is a gas that around them and that gas moves very rapidly, it gets very hot and we're able to detect it through x rays and other other parts of the spectrum. so we can still learn quite a lot about black holes and the effect on their environment just by observing what's near them. interesting, i jump kimberly and then kevin, go ahead. i love the idea that we're, we're looking at this data now we're talking about data that is essentially invisible, right? all of this material that we've been talking about these, this on vacation, and that, that image, even from the rise and telescope, these are in different kinds of light that human eyes can proceed. we can't see it extra late. we can't see in radio light. i'm so it's really important to consider

like all of these things that are happening out there in the universe. so much of that we can't see and we need different telescopes, like the channels for observatory, like the event horizon telescope. get in order for us to be able to learn more about them. i like to think of the chantix observatory is like a black hole hunter. it's found black holes near far small, big, even medium size. one kind of like a goldilocks thing. i guess. there's just, there's so much to learn for these people little special laboratories that are out there in the universe. just just wait, be studied and pre, if you were going to say you were going to. yeah, i say, you know why i'm on so often asked this question, what does it mean that even like on a scale, right? yeah, so analogy that we've all seen right from cape canaveral, you have to booster rockets out so that they escape the gravitational grip of the art. so we have to get rocket fuel boosted. it'll 11 kilometers per 2nd, and then to free itself off, the gravity doesn't fall back. right?

so this case. so if you just imagine that stating something on the gravity of the earth, so that's what to do about the gravity, intense gravity of a black hole is such that that escape speed, that the rocket speed that you need to get has to be the speed of light, so that's what we mean. why even, you know, a light cannot escape a black hole. interesting. yeah. how do we coming back was of this question asking when you have pointed out, we map these invisible entities indirectly in the case of a black hole. so it is feeding on gas, so gas has been good in again, by the gravity of the black hole as the dining gas of the gas as is getting food and it gets a glow. and that's what we're seeing in the x rays. so we don't actually see the whole it, we see the stuff that is on route to being so, you know, swallowed by the whole song at least. yeah, i mean this, this term,

these terms and terminology swallowed by the whole and it's, it creates such a mystery. i love it. i mean it's in of itself, right? so engaging, i do want to ask you about these images and how did the event horizon telescope create the image, this image of the black hole that's at the center of our galaxy take a look. ah, we have these are, these are 2 different images, right? comparing help me understand what the says for our audience, comparing the size of 2 black holes that may be 7 and sagittarius a. so what is significant about this? that can be understood by someone a simpleton like me, priyah. so i, yeah. so what we are seeing is we had zoomed in to a region that is right around because event horizon of the black hole with boundary that we're not even light in this gate. we're a little bit outside it here, but we'd zoomed right in back to the heart of the black hole if you will. okay. back to black hole is the one that is the center of our galaxy salutary star is

4000000 times the mass of the sun. the one in m, 87, a 6000000000 times the massive sun mattress and the event or i have a telescope, a project managed to zoom right. it is the leverage to many radio dishes. yeah. and around the are domain make and make me a tire size of the art. behave like one radio dish. and so that's the biggest alesco. let me, ah, it's crazy to me. i mean, when we talk them these numbers, these figures, i don't really, it's hard to wrap my mind around them, but that's just me. but kimberly, that's why you're here. i've read that you, you kind of talk also about and by the way it should be mentioned, the event horizon telescope for those who don't know because this is really cool. you can route out and, and geek out on this, there were 11 telescope, synchronized around the world, right? creating sort of a virtual earth sized telescope, as we just heard, pre explain to take these images from far away. so there's so much we know so much

. we're learning with the data so much we don't know though. kimberly like what is the ultimate link they are there cosmic recycling centers? did i? did i understand this, right. what might that even mean? i mean, are they recycling up there and we're not recycling? yeah. well i'm, i'm a huge fan of recycling, so i, i think i really like black holes and things like supernova remnants because they are the ultimate cosmic recycling centers. recycling at a much grander scale than humans can ever hope to do. i do think black hole sort of have a bad rap. it got this sort of negative reputation for being just cosmic vacuum cleaners . you know, things of doom and gloom. and yes, nobody really wants to get too close. i don't want to be to get a fide, if i, you know, fall into that gravitational pull. no, thank you. right. i am happy here on earth and all that, but we have a lot to be grateful for, i think as well to black holes. and you know, the stellar explosions that produce many the buckles that we know about. they're also spinning out other really important elements. i'm when black clothes collide,

those, those types of collisions are giving us even more elements. and those types of ellensby is here on earth, right. so there's a lot about this idea of cosmic recycling that i think is very attractive that it's not just doom and gloom that it also creation and potential future life. right. and you know, we see or hear, or think of black holes as sort of something as you said destructive. i'm glad you brought up this point because it's really kind of, you know, the, in the popular culture, if you will. that's, that's how it's often referred to, but your research really frames that as, as a creator, as an engine, if you will, in the galaxy. so in a sense, it's nice that today and, and through your work in the sense we can flip the script. if you will, and with that in mind, i want to share this with you 3 of the pre. maybe you can share your comments on this. we got a video comment that was sent to us from a professor of astrophysics. a geron lewis. ok. oh, just take a listen like holds miss do is places surrounded by a one way barrier known as the event horizon. you can fall in,

but you can never get out what happens inside the event horizon. we don't really know something that you might just fold that center be crushed at the singularity. others have suggested that black holes might be portals to other universities. you might fall into a black hole in our universe and pop out of a y told in some other universe. but it's going to be a brave person who jumps in to try and find out. i mean, i am willing to be that brave person, but only because i don't know what. who did it with me now? i'm joking. but what, what do you make of that pre, i mean his, the way he frames that it's a bit bit in just but, but what do you think a great, 1st of all, i actually know in my world cambridge, it's a small world. yes. oh no. but i think he's absolutely right that we don't really quite understand the fate of matter and information. when i'm a little, i'm going to mix them up now and say anything that falls into the black hole

information about it, right? i even talking had a very nice analogy. you said no, i suppose you look up the encyclopedia britannica. right. and i look up and i can see it is great, not worth it. reaches all these people that information, right. it's like, look, yeah, no i what the encyclopedia in a closed box. i walk a block box completely. i burned down the, it's like all the information that was in the encyclopedia still in the box. yeah. don't know how we store it anymore, right. and we don't want to retrieve that, so when we are, i understand what happens inside a black hole that isn't much to understand why i to nation i or no, i knew, you know, i really appreciate you breaking it down and very 3 terms that analogy helped me certainly understand it, and for those who are listening to the video comment from that astrophysics professor, he did mention the event horizon. just to clarify,

i want to make sure that i'm actually a learning things that is not only the point of the point of no return, which is a region basically a space around the black hole where it, where light and matter sort of a get sucked in yeah, okay, so, so we're learning here together. fantastic. we also have a comment about sort of vibration. we hear this term very often when discussing sort of the world and, and the physical world buzz video is asking light can't escape black holes. ok. but can vibrations escape black holes? i'm not sure i really understand the question, but hey, he asked in a few times. so society in the studio i read about the pre a vibrations what, what is there anything that can escape a black hole rag? no, i don't think even vibrations can escape a black hole, right? so the vibrations that we are detecting in the summer vacation, right, are the impact, the result of black was gravity interacting with that gap. that's fine to fall in.

so not all the gas then gets what makes it way, makes its way in there is some that is expanded out and i think as you mentioned, there's a little bit of benching that's happening, right. so there's material that's also coming out. so the some ways are sound needs a medium, right? so because you have this gas, these pressure we, we are able to hear them. and so that's what we are really, they're not really escaping from inside the black hole, but they are generated by physics that's happening at the ages of the black hole. that easy way to put it if you want to be your version like no, no, no, save the nerdy version for later after the so that was great. you're doing great. i'm no i, i want to ask about the misconceptions a little bit before we rob here. you know, worm holes and all these sorts of other things that we hear about. i mean,

what are sort of some of the challenges? what are the limitations? what can i mean with all this exciting research, like, what are we still struggling really to understand, or what excites you, looking to the future in terms of continuing to do this work? anything on your mind to hon. 0, one of the things i find most exciting about the future of this field is just understanding how this all began. you know, where, when did the 1st black hole form, how did they form? there's a lot of mystery surrounding that we are to texting galaxies with really massive black holes at periods of the universe that were much earlier than we thought they should exist. and they're already big or already massive. we call them quasars the middle of light. and so we really don't understand how black hole could have formed so early on in the universe as history and gotten as massive as they did so quickly . and so that's one of those big open questions that has a lot of people scratching their heads of your rising and, and hopefully we'll know more about that. wow. well,

and i saw pre and kimberly not scratching their head, but nodding their head as you are, bringing up those points. so that's all well and good that it's something you mutually agree upon. i do want to share with you one more comment. we have from 12 dash, this might be an obvious one, but how, how it's time effected in about black hole. what sort of the easiest way of kind of understanding that kim i will pass that went to korea. i bought this one though. i don't want to sound no, let's just go with time. i mean, what is time is what i was going to ask, which is way too. i don't know if that's the right. that's correct. i think what really happens, right, and this is the other reason. black holes are so bizarre time each nose down once you cross the banks are rising. ok. so what really happens? right, so we have the university think is a 4 dimensional sheet. so you need to specify where something happens. you need to say it happened in this space. so 3 numbers to tell you where and why that tells

you when that's the time, right? so you have a space and you have time. so this together or the sort of meet space time when you cross a black hole at the event horizon. the strangest thing happens, the nature of space and time. let slips. ok, so i just don't need that, you know, lift this meaning what flips like. inverse is like, does a back flip, i mean, time starts to behave like space. okay? so last time gets effect and i think you know, time really our notion of time it gets really slow down way to really slow it down and i have reached this singularity, it sort of starts taking in critically long. yeah. and it's, it's fascinating to hear you explain that it sounds to me like you're describing a monday morning where time just seems to slow down. but hey,

that's my my ability to make sense of this. i want to thank you all. this has been really enlightening and engaging, so thank you for joining us. kimberly priyah and jahan for those of you at home. thank you for sending us your questions. hopefully we got to a lot of those youtube questions. and remember here at the stream, these conversations do not end on air here on television. you can always follow us at a stream of both on twitter and instagram with frank assessments. these heat waves we're seeing now, are they a product of global warming? we will say more of these events. what is happening is that climate change it making them work in depth analysis of the days headlines inside story on al jazeera

. ah, we algebra with the, with the bank gets close. this is the way i'm going to go with fans across the globe. things can expect some strong support hearing with this, but like on milton central america, can canada been that 1st lay spanish in qualifying all the us? mexico? will costa rica arrive to be a countdown on al jazeera? it could be seen as a laudable goal, maybe great to racial integration under reduced coin, but to drive to abolish so called ghettos has led to the danish government reclassifying citizens along racial lines. such an ethnic quotas for every district

in the country, the amos for every district of population that is at least 70 percent less than 80 percent of mil to parkins residence from an immigrant background. the danish government can't make pay believe areas might be on the park and purely on the basis of ethnicity. what it can do is force the housing to be sold off to private investors who then erased the rents. the idea is that mainly western people assume speaking wealthy will then be able to move back in. residents are suing the government and anti segregation policy said to them, social condition and crime rate would be valid. but we object to moving people from their homes based on ethnicity, minorities, find themselves stuck. they move out of one area to lower the number of non westerners but can't move into another area for the same reason. ah.