Transcript 0:00 · as you watch this swaths of the 0:01 · astronomy Community are engaged in the 0:03 · greatest treasure hunt in over a century 0:06 · somewhere out on the fringes of the 0:08 · solar system it's thought a massive 0:10 · object might L one we've so far only 0:12 · been able to indirectly sense thanks to 0:14 · its gravitational effect on several 0:16 · smaller objects but which may soon be 0:18 · cited directly a here to unnoticed 0:20 · planet that would represent the First 0:21 · new addition to our Cosmic Family in 0:23 · living memory known imaginatively as 0:26 · Planet 9 this invisible world is 0:28 · currently only theoretical but since it 0:30 · was first proposed in 2016 evidence has 0:32 · been stacking up that it may be out 0:34 · there evidence that suggests we might 0:36 · soon have to rewrite the entire history 0:39 · of the solar system I mean at least 0:41 · that's the hope the plane sized pot of 0:43 · gold tempting astronomers to keep 0:45 · following this Cosmic rainbow yet as 0:47 · we're about to see the science 0:49 · surrounding Planet 9 remains unsettled 0:52 · it could be Humanity's next great 0:53 · discovery or it could be something far 0:55 · weirder join us today as we turn our 0:58 · attention to the edges of our solar 0:59 · system and try and separate fact from 1:01 · fiction regarding our missing neighbor 1:03 · ironically the idea of a missing ninth 1:05 · planet was born at the exact same moment 1:07 · astronomers were reducing the official 1:09 · tally down to eight the era was the 1:11 · beginning of the 21st century an era 1:14 · that had seen a Cascade of discoveries 1:16 · about the outer solar system along with 1:18 · major controversy first the discoveries 1:20 · back in 1992 scientists have finally 1:22 · confirmed the existence of the Kyper 1:24 · belt a ring of objects beyond the orbit 1:27 · of Neptune filled with icy bodies but it 1:29 · was only as the new century dawned that 1:32 · the size of some of these bodies started 1:34 · to become clear between 2002 and 2005 1:37 · researchers led by Mike Brown cited six 1:39 · dwarf planets that rivaled Pluto it was 1:41 · this last fact that sparked controversy 1:44 · with one of the Newfound dwarf planets 1:46 · arys having a greater mass than the 1:47 · former ninth planet astronomers began to 1:50 · question whether poor old Pluto is even 1:53 · really a planet at all infamously this 1:55 · led to a 2006 meeting of the 1:57 · international astronomical Union where 1:59 · attendees narrowly voted to strip Pluto 2:01 · of its status yet even as kids 2:03 · everywhere began unhappily redesigning 2:05 · their science fair solar system models 2:07 · there were already signs emerging that 2:08 · there might be a ninth planet after all 2:10 · that while Pluto may be too small to 2:12 · really count that didn't mean there 2:14 · wasn't another larger World lurking out 2:16 · there the first clue came from one of 2:18 · the new dwarf planet candidates sedna 2:21 · Unlike Pluto arys or other newcomers 2:24 · like maam Mara or how mayor sedna didn't 2:26 · behave like a regular Kyper belt object 2:29 · instead it had an extremely weird orbit 2:32 · one that took it from a closest approach 2:34 · to the sun of 84 Au where 1 Au is the 2:37 · distance from Earth to our star all the 2:39 · way out to a furthest point of 937 Au a 2:43 · bizarre elongated orbit that takes over 2:45 · 11,000 years at the time it was assumed 2:48 · that SED was simply a weird one off a 2:50 · freaky little world doing its own freaky 2:52 · thing on the outskirts of the solar 2:53 · system but then we began to locate and 2:55 · investigate more and more objects in the 2:57 · region and it started to look like maybe 2:59 · set no wasn't alone trans neptunian 3:01 · objects or tnos is the name given to 3:04 · small icy bodies just beyond the orbit 3:06 · of Neptune leftover building blocks of 3:08 · the solar system they're often quite 3:10 · hard to detect although we think tnos 3:12 · larger than 100 kilm May number in the 3:14 · hundreds of thousands so far we've only 3:16 · located about 4,000 of them but even 3:18 · with this small sample size we can see 3:20 · that some of them behave in ways our 3:22 · model of the solar system doesn't 3:23 · predict first there are the detached 3:26 · tnos accounting for about 10% of all 3:28 · tnos the these little dudes have orbits 3:31 · that aren't influenced by Neptune while 3:33 · a models say a few should exist it's 3:35 · very hard to account for the sheer 3:37 · number of them next you have a bunch of 3:38 · TNS with orbits at Wild angles that 3:41 · means they zip around the Sun at a tilt 3:42 · of more than 45° another thing our 3:44 · models don't predict happening on such a 3:46 · large scale finally there are the tnos 3:49 · with such odd orbits that they're 3:51 · sometimes dubbed etnos extreme trans 3:54 · neptunian objects numbering about a 3:56 · dozen they're scattered in such a wild 3:58 · way that some new gravitational s ources 4:00 · seemingly needed something that threw 4:02 · them out of alignment in the distant 4:03 · past and now keeps them trapped in their 4:06 · eccentric dances the CTIC astronomers 4:08 · Mike Brown and Constantine batan there 4:10 · was one simple explanation in 2016 they 4:14 · published a paper suggesting sedna and 4:16 · five other etnos were likely being 4:18 · influenced by a hidden world one with 4:21 · between five and 10 times the mass of 4:23 · Earth in short a missing ninth planet in 4:27 · the seven years since that Cosmos 4:28 · shaking announc M the theory has been 4:30 · refined today is thought the planet 9 is 4:32 · smaller than originally estimated closer 4:34 · to six times the mass of Earth rather 4:36 · than 10 there are also now 11 TN 4:38 · identified as having been perturbed by 4:40 · its orbit rather than just six still the 4:43 · basic outlines of the theory remain 4:45 · intact the idea that there may be a 4:47 · whole other world Beyond Neptune a 4:49 · neighbor Humanity has remained ignorant 4:51 · of even as we've gained the ability to 4:54 · detect planets in other solar systems if 4:56 · that's the case and another planet is 4:58 · really there then it raises an obvious 5:00 · question what's it like planets in our 5:03 · solar system are divided into three 5:05 · distinct categories you have the rocky 5:07 · terrestrial worlds Earth Venus Mars and 5:09 · Mercury then you have the gas giants 5:11 · like Jupiter and Saturn and finally 5:12 · you've got the ice giants including not 5:14 · just Neptune but also the gassy Glory 5:17 · that is Uranus if you were feeling 5:20 · generous you could also add to that list 5:21 · the dwarf planets but the main point 5:24 · isn't whether our solar system contains 5:25 · three or four classes of Worlds but that 5:28 · whatever the true number finding Planet 5:30 · 9 would increase that total that's 5:33 · because Planet 99's estimated Mass Falls 5:35 · between that of Earth and Neptune 5:37 · meaning one of two outcomes is likely 5:38 · it's either a rocky super Earth or a 5:41 · gaseous sub Neptune either way finding 5:43 · it would be extremely exciting imagine 5:46 · for a second how paleontologists would 5:48 · feel finding a living Mammoth right now 5:51 · we only know these creatures from 5:52 · tracers left over from bygone eras to 5:55 · suddenly go from working with vague 5:56 · outlines to having a living creature to 5:58 · study would be pretty mind expanding in 6:01 · a way that's sort of how planetary 6:03 · scientists would feel discovering a sub 6:05 · Neptune in our backyard obviously the 6:08 · analogy isn't perfect sub Neptunes are 6:09 · extremely common across the Galaxy 6:11 · whereas living mammoths are uncommon to 6:13 · the point of being non-extinct still it 6:16 · hopefully gives you some vague idea of 6:18 · how awesome such a find would be how it 6:20 · would help unlock the secrets of 6:22 · planetary formation in both distant star 6:24 · systems and inside our own and that last 6:26 · point there is key so far from the Sun 6:29 · there's no no way a sub Neptune or super 6:31 · Earth could have been created where it 6:33 · now orbits instead it must have been 6:36 · born closer in only to be flung outwards 6:38 · during an era of chaos caused by 6:40 · Jupiter's early movements some think the 6:42 · reason Uranus is tilted on its side is 6:44 · due to a chance interaction with a 6:46 · migrating planet nine alternatively it 6:48 · might have once belonged to another star 6:50 · only to be captured by our Sun's gravity 6:52 · as the two systems swept by one another 6:54 · long ago of course this is all just 6:57 · speculation a towering edifice of of 6:59 · theory built ATP a bunch of extremely 7:01 · distant objects moving in some weird 7:03 · ways yet that doesn't mean the 7:04 · foundations for this Tower aren't solid 7:07 · after all Humanity has already made 7:09 · major planetary discoveries based on 7:10 · orbital disturbances most famously this 7:13 · includes discovering Neptune ever since 7:15 · William herel first sted hungrily at 7:17 · Uranus people have been aware that 7:19 · planet 7's orbit was kind of off like 7:22 · something big was influencing it in 1846 7:25 · Urban Laria did the calculations and 7:27 · pinpointed exactly where that unseen 7:29 · object was the same evening he alerted a 7:31 · German astronomer and Neptune was 7:34 · discovered it's an episode that shows 7:36 · the value of paying attention to 7:37 · seemingly small irregularities 7:39 · consciously or not today's astronomers 7:42 · are all hoping to repeat laria's trick 7:44 · and discover Planet 9 that is if we 7:47 · haven't discovered it already in the 7:49 · cases of Uranus Neptune Pluto and ays 7:53 · all four bodies turned out to have been 7:55 · cited long before their official 7:57 · discoveries allbe by people who didn't 7:58 · realize what they were looking at 8:00 · Neptune for example was recorded by 8:01 · Galileo in 1612 but mistaken for a star 8:04 · a photographic plate of Aris meanwhile 8:06 · has been found dating to 1955 that means 8:09 · there's a fair chance that if Planet 9 8:10 · exists signs of it are already hiding in 8:13 · some forgotten or overlooked data 8:15 · somewhere we even have a potential 8:16 · candidate back in 1983 astronomer 8:18 · Michael Rowan Robinson undertook a 8:20 · planet Hunting Expedition using the very 8:22 · first infrared Space Telescope at the 8:25 · time he thought he' found nothing but 8:26 · after Brown and bat again published 8:28 · their planet theory he went back and 8:31 · Revisited his work there he found three 8:33 · potential matches for the missing World 8:35 · although the low quality of the 8:36 · detections makes confirming them 8:38 · impossible and that last Point brings us 8:40 · neatly on to our next chapter with seven 8:42 · years of searching under our Collective 8:43 · belts you might be starting to wonder 8:46 · why if we know roughly where it should 8:48 · be we haven't found Planet 9 the answer 8:52 · sadly is that finding a missing Planet 8:53 · at such distances even one close in size 8:56 · to Neptune is near impossible of after 8:59 · refining their work Brown and bat again 9:01 · recently made a welcome announcement 9:03 · rather than an orbital journey of more 9:04 · than 18,000 years they instead expect 9:06 · Planet 9 to circle the sun once every 9:08 · 7,400 years that means it should be 9:10 · closer and brighter than initially 9:12 · anticipated and therefore easier to see 9:14 · in theory the news was great slicing 9:15 · over 10,000 years off an object's orbit 9:17 · sharply reduces the amount of distance 9:19 · it covers in Practical terms though an 9:21 · object that takes over 7,000 years to 9:23 · orbit the Sun is still capable of 9:24 · traveling very very far away from us 9:27 · Pluto's orbit for comparison takes Sun 9:29 · 250 years and while sedna's 11,400 year 9:32 · orbit is longer than Planet 9es sedna 9:35 · always discovered when it was near perah 9:37 · helon the point when an object is 9:39 · closest to the Sun by contrast Planet 9 9:41 · is thought to currently be at its 9:43 · furthest point that means looking for a 9:45 · very very tiny spec moving very very 9:48 · slowly against the Milky Way Starfield 9:50 · so far from the Sun the missing world 9:52 · will be reflecting very little light 9:54 · making it hard to detect invisible 9:55 · wavelengths it temperature is also 9:57 · likely to be very very low perhaps 9:59 · causing it to only radiate the far 10:02 · infrared Spectrum the word far there is 10:05 · the important part because it means it 10:06 · will be invisible to even the James web 10:08 · Space Telescope which is incapable of 10:10 · observing things in the far infrared 10:11 · range indeed observing extremely distant 10:14 · things in infrared can come with its own 10:15 · set of problems a 2022 study by cedrick 10:18 · Chris and sergeants reported in Universe 10:20 · today using two infrared Sky surveys 10:22 · taken 20 years apart initially found 500 10:25 · potential candidates for Planet 9 in the 10:26 · data but when they dug into them 10:28 · individually they found the majority 10:29 · were Galactic cirrus clouds of 10:31 · Interstellar dust that radiate in 10:33 · infrared since Planet 9 is assumed to 10:35 · currently be hidden by the Milky Way 10:37 · Starfield such false positives would 10:39 · plague any surge now these are not 10:42 · insurmountable problems but overcoming 10:44 · them will require not just superhuman 10:45 · patience and lots and lots of telescope 10:47 · time but also knowing exactly where to 10:49 · look when we say something like Planet 9 10:51 · is currently moving against the mway 10:53 · Starfield it can be a little misleading 10:55 · as it makes it sound like we've got a 10:56 · rough location but this location is 10:59 · rough in the same way that dropping a 11:01 · marble out a jet flying over the United 11:03 · States and declaring it landed in the 11:04 · midwest is sure it's technically correct 11:07 · but it won't really help anyone wanting 11:08 · to track down and find that marble as 11:10 · two planetary scientists explained in an 11:12 · article for conversation the problem is 11:14 · that these telescopes usually have a 11:16 · very small field of view it is like 11:18 · using a microscope to scan a very large 11:20 · area for something small that we've 11:22 · dropped this helps explain why so many 11:24 · Searchers since 2016 have come up 11:26 · empty-handed space Australia helpfully 11:28 · listed some of the key instruments and 11:29 · surveys so far used the wise telescope 11:32 · the Gia spacecraft the test telescope 11:34 · the dark energy survey and the Catalina 11:36 · Sky survey as well as looking through 11:38 · old data from stuff like the Siding 11:40 · Spring survey and the zwiki transient 11:42 · facility survey all turned up nothing 11:45 · nor is it really possible to use the 11:47 · orbits of tnos disrupted by Planet 9 to 11:50 · pinpoint its location because we know 11:51 · comparatively little about the Kyer belt 11:54 · it's tough to really zero in on objects 11:56 · that are behaving in weird ways and draw 11:58 · conclusions from on them if we could see 12:00 · and understand the belt's whole 12:02 · structure we would be able to pinpoint 12:03 · areas where a large planet has disrupted 12:06 · things at the moment though we're 12:07 · working with around a dozen objects that 12:10 · may seem to be orbiting weirdly just as 12:12 · a side effect of selection bias if 12:15 · that's the case then Planet 9 may be 12:17 · nothing more than a goost in the data a 12:19 · phantom conjured Bon squinting at a 12:21 · blurry and incomplete picture and hoping 12:23 · desperately to see something luckily 12:25 · combining all surveys and simply 12:26 · pointing telescopes at trunks of the 12:27 · night sky and hoping aren't the only 12:30 · ways to track down a missing Planet it 12:32 · may be that we're soon able to narrow 12:34 · down our hidden neighbors location using 12:36 · some pretty clever methods as Elton John 12:39 · once sang of Mars planet 9 in fact is 12:41 · cold as hell but you know what might not 12:43 · be so cold any moons the planet has of 12:46 · all the planets in our solar system only 12:48 · two Mercury and Venus do not have any 12:50 · moons that means it's highly likely 12:52 · Planet 9 has some companions on its 12:54 · lonely Journey Through the void 12:56 · especially when you consider the region 12:57 · it inhabits is full of teer as the most 12:59 · massive gravity Source around it would 13:01 · be amazing if Planet 9 hadn't captured 13:04 · at least a few TN over the years just 13:06 · look at Neptune there are good reasons 13:08 · to believe its large Moon Triton is a 13:10 · former dwarf planet dragged into the ice 13:12 · giants orbit at this stage you might be 13:15 · wondering why all of this matters surely 13:17 · any moon so far away from the Sun is 13:19 · going to be equally cold and therefore 13:22 · even harder to see than its host World 13:25 · well perhaps not education University of 13:27 · Hong Kong scholar man her Chan recently 13:30 · released a pre-print paper examining the 13:32 · role of tidal heating on any moons 13:34 · Planet 9 may have tidal heating is a 13:36 · super interesting thing even for Layman 13:38 · such as ourselves the result of gravity 13:40 · pulling on an object in a non-uniform 13:42 · way creating friction and thus heating 13:44 · it's thought to be the mechanism that 13:46 · keeps subsurface oceans liquid on moons 13:48 · like Enceladus Europa and Triton in this 13:51 · case though the paper isn't concerned 13:53 · with liquid water but with the heat that 13:56 · would be released from this process that 13:58 · would make Planet 9's moons potentially 14:00 · hotter than the planet itself meaning 14:02 · wouldst stand a better chance of picking 14:03 · them up in infrared surveys of the night 14:05 · sky it's a fascinating concept and just 14:07 · one of a recent slew of bold theories 14:10 · put out on how we could detect the 14:11 · invisible World another involves using 14:13 · an even wider mechanism the path of an 14:15 · Interstellar asteroid cnos 14:19 · 201418 is most famous as the meteor that 14:22 · crashed offshore in Papa New Guinea in 14:24 · 2014 and later became the target of a 14:26 · sea dredging Expedition led by lobe who 14:29 · claims that it might be a piece of alien 14:31 · equipment but whether or not it's the 14:33 · staff of fox mold's wet dreams that may 14:36 · have a far more pric use according to 14:39 · Hector soas Navaro and ignatio Trio 14:42 · Cabrera of The Institute astrophysic de 14:44 · canarius by tracing its path back across 14:46 · the solar system we can see whether it 14:48 · interacted with a large object on its 14:50 · way in 2023 they published a paper doing 14:53 · just that in it they demonstrated how 14:55 · the asteroid likely came from the region 14:56 · of space where Planet 9 is is most 14:59 · likely to be located if the planet is 15:01 · indeed there then the odds of the meteor 15:03 · interacting with its gravity are 15:04 · something like 15:06 · 99.9% that means if we can figure out 15:08 · when cnos S14 entered our solar system 15:11 · we can plot its trajectory backwards and 15:13 · pinpoint where Planet 9 was when the 15:15 · meteor brushed by circus novaro and 15:18 · Cabrera think this places the missing 15:20 · World quote very close to the point 15:22 · where the constellations Aries Taurus 15:24 · and cus meet now to return to our 15:26 · analogy from the last chapter having 15:27 · confirmation of this world would be like 15:29 · narrowing our airplane drop marbles 15:31 · location down from the Midwest to 15:33 · somewhere in downtown De Moine still a 15:36 · huge area to search but one that's now 15:39 · in the Realms of possibility but perhaps 15:41 · the planet 9 location Mission we like 15:43 · the most is the one that would involve 15:45 · probing Uranus the most recent decad or 15:47 · survey selected as highest priority for 15:49 · NASA a dedicated mission to Planet 7 15:51 · when it finally launches assuming the US 15:53 · Congress can settle down long enough to 15:55 · start funding science again the craft 15:57 · will spend between 10 and 15 years 15:59 · simply traveling through the void 16:00 · between Jupiter and its Target rather 16:03 · than an annoying pause though that 16:05 · decade could prove invaluable to science 16:07 · when an interplanetary craft is on a 16:09 · long cruise like that it occasionally 16:11 · checks in with a station on Earth you 16:13 · know just a call to say where it is and 16:15 · how it's doing so we know it's not about 16:17 · to go flying off course or activate any 16:19 · hidden monoliths or anything normally 16:21 · these pings are relatively rare but if 16:24 · we could make the Uranian probe fire off 16:26 · enough we'd be able to see over time how 16:29 · Planet 99's distant gravity affected the 16:31 · craft it would be a subtle effect a near 16:34 · invisible tugging but it would also be 16:36 · enough for us to use that data to narrow 16:38 · down Planet 99's location perhaps enough 16:40 · so that astronomers could even be 16:42 · convinced to start pointing powerful 16:44 · telescopes in that direction knowing 16:46 · that they had a decent probability of 16:47 · finding something of course NASA won't 16:49 · be ready to investigate the Majesty of 16:51 · Uranus for several years that means 16:52 · there's a good chance we'll have located 16:54 · the planet long beforehand the ver 16:56 · Reuben observatory in Chile is current 16:58 · ly the most exciting science project not 17:00 · enough people are talking about an 8.4 M 17:03 · telescope it will photograph the entire 17:05 · visible night sky every couple of days 17:07 · producing mountains of data that 17:08 · researchers will be able to sift through 17:10 · looking for signs of unknown objects if 17:12 · Planet 9 really is out there this is the 17:15 · most likely way will find it what if it 17:16 · isn't what if the VC reubin comes online 17:19 · only to return nothing avoid where the 17:21 · missing sub Neptune should rightly be 17:24 · incredibly that might be even more 17:25 · exciting than actually finding it 17:27 · perhaps the most interesting thing about 17:29 · planet 9 is its inherent sense of 17:30 · mystery the feeling that it could be the 17:32 · world brown and badan theorized back in 17:35 · 2016 or it could be something totally 17:37 · different you know how you sometimes see 17:39 · images of old maps that Drew on 17:40 · hypothetical Australia before it was 17:42 · ever actually cited well that's kind of 17:45 · where we are with Planet 9 we think it's 17:47 · out there we think we know roughly where 17:49 · it is beyond that we might as well just 17:52 · write here be Mysteries so if it turns 17:54 · out the planet N9 isn't a missing 17:55 · superar or a sub Neptune what might it 17:58 · be the sist theory is that it really is 18:00 · a planet just not one on the scale that 18:02 · brown and ban imagined the trouble with 18:05 · a sub Neptune is that it would be by far 18:07 · the most powerful gravitational force in 18:09 · the region so powerful that models 18:11 · predict it would mess up the orbits of 18:13 · far more TN than we're currently 18:14 · witnessing in 2023 this led planetary 18:17 · scientists Patrick safia Leck liaa and 18:20 · takishi ETO to theorize in a paper 18:22 · published in the astronomical journals 18:24 · Planet 9 might be smaller small enough 18:26 · to be comparable with Earth there is 18:28 · research showed that a Planet Air 1.5 18:30 · times the mass of Earth orbiting between 18:32 · 250 and 500 astronomical units from the 18:34 · Sun could account for all the weird tnos 18:37 · that we're aware of especially if its 18:39 · orbit is tilted to 45° that would make 18:41 · Planet 9 not some hidden giant but a 18:43 · real life mest a near Twin of our worlds 18:47 · likely cast outward at some point in the 18:49 · early solar system to the icy Realm of 18:51 · the Kyper bels this though is just the 18:54 · sanest explanation further up the 18:56 · weirdness scale You' get to what we like 18:58 · likely be the most exciting outcome of 19:00 · all that planet 9 is actually a 19:02 · primordial black hole way back in 1971 19:05 · Steven Hawking theorized how the extreme 19:07 · environment created just after the big 19:09 · bang could have created pockets of 19:11 · matter so dense they collapsed into 19:13 · black holes unlike regular black holes 19:15 · which are born of collapsing Stars these 19:17 · primordial versions could be anywhere in 19:18 · the universe they could also be much 19:20 · smaller beach ball siiz things with the 19:23 · mass of a planet to date we've never 19:25 · seen any evidence for these objects all 19:27 · of which makes the idea that they might 19:29 · be lurking out there on the edges of our 19:31 · solar system immensely exciting aside 19:34 · from proving Hawkings Theory such a 19:36 · black hole would also be close enough 19:38 · for us to potentially send a prob about 19:40 · to study it something we likely won't 19:42 · have the tech to do with regular black 19:43 · holes for hundreds or even thousands of 19:45 · years the downside of Planet 9 really 19:47 · being a black hole is that it would be 19:49 · insanely hard to detect aside from 19:51 · giving off no light a primordial black 19:53 · hole would also be small enough to fit 19:55 · into a backpack rather than searching 19:58 · for for a dropped marble in the midwest 19:59 · this would be like searching for a 20:01 · single grain of sand as a paper on fizz. 20:04 · org noted this small size would make 20:07 · gravitational lensing and gamma ray 20:08 · emissions too faint to register once 20:10 · again though the ver ruin Observatory 20:12 · could well ride to the rescue here 20:14 · according to a paper by RV lob and a 20:16 · mere Sage small comets would ride into 20:18 · the path of such a primordial black hole 20:20 · at least a couple of times a year when 20:22 · that happens they would be ripped apart 20:23 · producing a momentary flash a Flash The 20:26 · Observatory should be able to see as lob 20:27 · told the new York Times quote our 20:29 · calculations show that the flares will 20:31 · be bright enough for the Vera rubben 20:33 · Observatory to rule out or confirm 20:34 · Planet 9 as a black hole within one year 20:37 · of monitoring the sky currently regular 20:39 · observations by the telescope are 20:41 · expected to start in 2025 that means we 20:43 · could have a definitive answer before 20:46 · this video has even been up on YouTube 20:48 · for 3 years there are other theories too 20:51 · that planet 9 may actually be a clump of 20:52 · dark matter that it could be the exposed 20:55 · core of a world long ago destroyed but 20:57 · time is running short and we need to 20:59 · stop this video somewhere so that's how 21:01 · things stand at the moment with a 21:02 · mystery on the edge of our solar system 21:04 · one that's bedeviled scientists for 21:06 · seven years now and may do so for 21:08 · several more years to come in a way this 21:10 · makes our era an exciting time to be 21:12 · alive an era when we may be standing on 21:15 · the cusp of a great discovery one that 21:17 · would capture the world's imagination in 21:18 · a way unseen since Urban larier 21:21 · accurately predicted Neptune's position 21:23 · in the night sky on the other hand it 21:25 · also makes this something of a 21:26 · frustrating game no that there's a great 21:28 · mystery out there waiting to be solved 21:30 · one Future Folk will take for granted 21:32 · but which for now at least remains 21:34 · stubbornly out of our grasp what the 21:36 · coming years will hold for the hunt for 21:38 · Planet 9 remains to be seen but we feel 21:40 · confident in saying that whatever 21:42 · happens it will undoubtedly be a search 21:45 · to remember
no
Yes, but I just hope they don’t name it anything even close to the planet they call Uranus. Maybe instead name it swampbottom or something.
3 biggest lies:
1. Epstein killed himself.
2. Pluto isn’t a planet.
3. The check is in the mail.
I’ll be happy if it’s not named Urpenis.
I just want to know if Betelgeuse has begun to supernova.