JWST discovers exoplanets orbiting DEAD STARS

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Dr. Becky

Dr. Becky

Күн бұрын

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When stars like the Sun die do their planets survive? In 5 billion years the Sun will swell into a red giant star, swallowing up the Earth, and maybe even Mars. But what about Jupiter and the rest of the gas giant planets? This month new research has been published, claiming to have found two exoplanets in orbit around two dead white dwarf stars with JWST. These planets are similar in mass to Jupiter, and orbit their stars at a distance similar to Saturn and Neptune in the Solar System.
Mullally et al. (2024; two exoplanets directly imaged around white dwarf stars) - arxiv.org/pdf/2401.13153.pdf
JWST proposal 1911 - www.stsci.edu/jwst/phase2-pub...
My previous video on the history of exoplanet studies - • The discovery of the f...
JWST’s first exoplanet discovery - • JWST has discovered it...
JWST’s claim of a biomarker of life in an exoplanet atmosphere - • Did JWST find a MARKER...
00:00 - Introduction
01:30 - Why we need JWST to do this
03:01 - How do you search for exoplanets?
04:06 - The two newly discovered planets
05:59 - Masses and orbits of the two planets
06:13 - What does this mean for the Solar System?
07:01 - AD Interactive learning with Brilliant
08:39 - Bloopers
Video filmed on a Sony ⍺7 IV
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👩🏽‍💻 I'm Dr. Becky Smethurst, an astrophysicist at the University of Oxford (Christ Church). I love making videos about science with an unnatural level of enthusiasm. I like to focus on how we know things, not just what we know. And especially, the things we still don't know. If you've ever wondered about something in space and couldn't find an answer online - you can ask me! My day job is to do research into how supermassive black holes can affect the galaxies that they live in. In particular, I look at whether the energy output from the disk of material orbiting around a growing supermassive black hole can stop a galaxy from forming stars.
drbecky.uk.com
rebeccasmethurst.co.uk

Пікірлер: 581
@koomber777
@koomber777 3 ай бұрын
Fun fact: first exoplanets discovered were orbiting a neutron star. They were detected because of the impact they had on the pulsars timing.
@cortos_9733
@cortos_9733 3 ай бұрын
Yeah the first named exoplanet is called Poltergeist. Which is just plain awesome and thematically appropriate.
@souledgar
@souledgar 3 ай бұрын
Aren't neutron stars another form of a stellar corpse? If we've seen planets around neutron stars, which are created in a far more violent death throe than what a white dwarf's original star would have gone through, then why would there be any doubt that a planet would eventually be found around one? Don't get me wrong, the discovery is cool, but its doesn't seem to be that big of a deal.
@waverod9275
@waverod9275 3 ай бұрын
@@souledgar for the pulsar planets, it's not clear that they predate the supernova that formed the pulsar. It may be that they formed afterward.
@tylera2226
@tylera2226 3 ай бұрын
That is the first agreed upon discovery where they were confident in what they had discovered partly because the exoplanets we detected before didn’t fall within our expectations of possible planet sizes and mass.
@astiagogo
@astiagogo 3 ай бұрын
None of which matters because you weren't paying attention. The End.
@jamesrockybullin5250
@jamesrockybullin5250 3 ай бұрын
I absolutely love that any time a science communicator talks about the sun turning into a red giant, they remind us it's going to happen in 5 billion years, and not to panic. I suppose there's always someone who's learning it for the first time!
@johnladuke6475
@johnladuke6475 3 ай бұрын
It still seems like awfully short notice. What if I have plans that day? They'll be ruined!
@mikehipperson
@mikehipperson 3 ай бұрын
Damn! I was going to wash my hair that day!
@jurajvariny6034
@jurajvariny6034 3 ай бұрын
@@mikehipperson that's auspicious timing, sun will dry them for you
@GS850GLZ-82
@GS850GLZ-82 3 ай бұрын
Earth will be torched long before 5 billion years. I believe I heard somewhere in the 300 to 500 million year area 🔥
@jaspertuin2073
@jaspertuin2073 2 ай бұрын
Better check if my insurance covers loss caused by Expanding Red Giants
@MainSequence1
@MainSequence1 3 ай бұрын
5.5k views in 45 minutes. I'm glad there's that many people interested in astronomy!
@user-dh6bj2me5p
@user-dh6bj2me5p 3 ай бұрын
There ARE that many people.
@Delibro
@Delibro 2 ай бұрын
@@user-dh6bj2me5p Yea there are that many, indicated also by the about a million of subscribers that many astrophysics channels have.
@BritishBeachcomber
@BritishBeachcomber 3 ай бұрын
My favourite White Dwarf is *40 Eri B,* the second brightest white dwarf. *I like to call it WD-40*
@ahcapella
@ahcapella 3 ай бұрын
BAH-DUMP-CHEE! [rim shot] How long have you been waiting to post that pun in Dr. Becky’s comments? lol!
@Stegibbon
@Stegibbon 3 ай бұрын
That was slick.
@james6401
@james6401 3 ай бұрын
Handy when your knowledge of stars is a bit rusty
@BritishBeachcomber
@BritishBeachcomber 28 күн бұрын
@@ahcapella I've been waiting to post it since about 3 seconds after I saw Becky's video title.
@chaoscope
@chaoscope 3 ай бұрын
It's probably been said before but I really like the idea of displaying every paper main author''s photo along with the abstract. Sometimes we tend to forget that scientists are human beings like us. 🙂
@a.karley4672
@a.karley4672 2 ай бұрын
Have you seen the publication fees for each photograph?
@MIN0RITY-REP0RT
@MIN0RITY-REP0RT 2 ай бұрын
Scientists are humans? Okay I'll take it under consideration, but by no means are lawyers human...
@Zachfive
@Zachfive 3 ай бұрын
“Good science is never late. Nor is it early; it arrives precisely when it is ready” -Magneto
@Squeesher
@Squeesher 3 ай бұрын
It's so easy to just pre-like the video before it even starts with this channel. It's Dr. Becky. I *know* I'm going to like the video.
@stewiesaidthat
@stewiesaidthat 2 ай бұрын
I have my doubts about Becky. In here Tides video she is using Newton's discounted gravitational attraction instead of the proven Laws of Motion from Newton and Kepler. Apparently she is not aware of Galileo theorizing that the tides are a result of the Earth's motion in space. Nor is she aware of Kepler's contribution showing that the Earth's acceleration factor is the greatest on its closest pass around the sun which is what causes the annual high tide. You would think that an self proclaimed astrophysicist would understand that the earth is orbiting the sun created in one line of acceleration whilst rotating on its axis creating another line of acceleration. The net affect is that the ocean is accelerated first in a clockwise direction as it orbits the sun and then counterclockwise creating the back and forth tidal motion. Even if there wasn't a moon orbiting the planet, the result would be the same. Can't wait for the day when another earth like planet is discovered with no moon orbiting it. How are the flat earthers calling themselves relativists going to spin that? They are already being confronted with planets larger than the host star. That throws a monkey wrench in their models based on mass rather than acceleration. Physicists are supposed to look at the observation from ALL frames of reference. Not just one.
@hdds6544
@hdds6544 3 ай бұрын
I like that we are still using the "false color" Neptune :)
@DrBecky
@DrBecky 3 ай бұрын
Haha I noticed that on reviewing the edit, and thought about changing it - but I moved house this week, so forgive me for having no energy left haha
@Avendesora
@Avendesora 3 ай бұрын
you mean the SUPERIOR color Neptune 😤
@MountainFisher
@MountainFisher 3 ай бұрын
@@Avendesora The one I see in my telescope is the blue-green , but probably atmospheric aberration.
@scottdorfler2551
@scottdorfler2551 3 ай бұрын
The problem with the true color Neptune is that it looks identical to Uranus, which can be scary. 😂 Sorry about the Uranus joke, but they do look almost identical. Plus, this isn't the first time Neptune has had its color corrected. It was done in 2017. It didn't take then either.
@ahcapella
@ahcapella 3 ай бұрын
@@scottdorfler2551 I believe it was Voyager 2 that first discovered the _dark rings around Uranus!_ lol
@mostboringyoutubechannel8845
@mostboringyoutubechannel8845 3 ай бұрын
Good evening Dr۔ Becky۔ Thank you for this mid week dose of curiosity۔ As always، thanks for making difficult ideas، concepts and scientific knowledge، easy for us to understand۔ Can't thank you enough۔
@mostboringyoutubechannel8845
@mostboringyoutubechannel8845 2 ай бұрын
Where will the April solar eclipse be visible in North America۔ Any information۔
@ericfielding2540
@ericfielding2540 3 ай бұрын
I am glad you put that “finally published” remark into the bloopers. I was thinking about how much I resemble that remark.
@csh43166
@csh43166 3 ай бұрын
I'm a very visual learner, and I love all the charts, illustrations and, especially! images, and etc. you include with your videos. I sometimes go back and look at them many, many times because I find them fascinating!! Thank you for your always interesting and excellent content, Dr. Becky!
@operatorium
@operatorium 3 ай бұрын
The white dwarf is actually hotter than the star was while in the main sequence. The infrared emission that JWST detects from the planet is not reflected light from the white dwarf, but the thermal emission from the (still warm) planet. The same happens in our solar system: Jupiter, Saturn, Uranus and Neptune emite much more in the infrared than they receive from the Sun.
@tonywells6990
@tonywells6990 3 ай бұрын
Yes, and more importantly its luminosity is a tiny fraction of a main sequence star so the size of the planets are calculated from how much they have cooled by their estimated age and is not from any reflection.
@patreekotime4578
@patreekotime4578 3 ай бұрын
Yeah, I was womdering about this!
@galoomba5559
@galoomba5559 3 ай бұрын
Yeah, i was about to ask how white dwarfs are brighter in the infrared, if that was the case they would be red, not white
@mhollands1341
@mhollands1341 3 ай бұрын
For one of the white dwarfs, WD2105-82, it is probably a bit cooler than when it was a main sequence star. The white dwarf has been cooling for almost 1billion years and is now a smidge below 10,000K. But according to the paper, it would have been a 2.5 Solar mass main sequence star in the past, and so would have had a temperature a bit over 10,000K. The other white dwarf, while having cooled to under 9000K, probably descended from a star only a bit heavier than the Sun, so that one is still hotter than its former main sequence star.
@operatorium
@operatorium 3 ай бұрын
Thanks for the clarification, I have not read the paper. My main point is that the amount of infrared light from the white dwarf that is reflected by the planet is negligible compared to the thermal emission arising from the internal heat source of the planet. That is regardless of the temperature of the WD. Actually, an old (and therefore colder and fainter) WD makes a bit less challenging to see the planet on top of the glare of the WD.
@myersred8
@myersred8 3 ай бұрын
Sidebar: I just love the word "orbit."
@luckyblank
@luckyblank 3 ай бұрын
I know we're not there yet, but I hope we get to the point that we can detect moons around such remainder gas giants.
@davidtatro7457
@davidtatro7457 3 ай бұрын
Dr. Kipping just got awarded JWST time this year specifically to search for exomoons. However, his candidate planet orbits a main sequence star. Maybe if that search is successful and exomoon study gets more popular, it will eventually lead to searches around white dwarfs too.
@larrypriest5789
@larrypriest5789 3 ай бұрын
really enjoyed this one. keep mooooving on to the next!
@TheSmileyTek
@TheSmileyTek 3 ай бұрын
Loving that shirt! Just ordered mine. Thanks doc!
@zombiedad
@zombiedad 3 ай бұрын
Great stuff. Thanks Dr Becky
@stevenkarnisky411
@stevenkarnisky411 3 ай бұрын
Excellent and fun, as always!
@CloudhoundCoUk
@CloudhoundCoUk 3 ай бұрын
Brilliant video. Thank you.
@drmaybe7680
@drmaybe7680 3 ай бұрын
An interesting presentation, thanks, I enjoyed it. As a professional software engineer though I have to confess I pursed my lips a little as you went into the sponsor promotion segment at the end. It's great of course for anyone to learn anything, and certainly the mental skills and disciplines gained through learning to code will never be wasted. My concern is rather to manage expectations. Coding is a bit like chess: easy to learn, hard to master. I've been doing it for over fifty years, and I am still learning and improving. There's also a strong Dunning-Kruger tendency to coding, in that many devotees feel that being able to bodge together a bit of Python means they have essentially conquered this business; any protests to the contrary by what-would-they-know, so-called professionals - sheesh, why do I need to initialize my variables? Add an 'else' block? - count as mere fussbudgetry that can be safely discounted. In this connection I can't resist mentioning that a significant fraction or my present day job is cleaning up god-awful code written by astronomers. ;)
@Aiden-nh3np
@Aiden-nh3np 3 ай бұрын
I really appreciate your content.
@neoanderson7
@neoanderson7 3 ай бұрын
I always enjoy your vids. 🙂
@sid2961
@sid2961 2 ай бұрын
Good simulations! Watching after a few years and the topics are quite interesting
@warren496
@warren496 3 ай бұрын
Like your enthusiasm.
@Valery0p5
@Valery0p5 3 ай бұрын
The exagon shaped starlight is so cool, even if I know it's just an artifact from jwst
@d.t.4523
@d.t.4523 2 ай бұрын
Thank you, keep working.
@mcdade7489
@mcdade7489 3 ай бұрын
Awesome vid again, Dr Becky. I wish you had been my physics teacher.
@donaldketter4589
@donaldketter4589 2 ай бұрын
So sorry to hear about your stalker. As 80 year old retired Chem.Eng. I love your broadcast which keeps my mind active. You make astrophysics fun and understandable. Thank you
@p.bckman2997
@p.bckman2997 3 ай бұрын
This is so cool, thanks!
@jasonmilam9080
@jasonmilam9080 3 ай бұрын
Your enthusiasm is so much fun…..
@Oneeyeddrummer
@Oneeyeddrummer 3 ай бұрын
Pretty and brilliant. I love your videos Dr Becky.
@mrobinson9297
@mrobinson9297 3 ай бұрын
nice. this has been theorized for a long time.
@noelstarchild
@noelstarchild 3 ай бұрын
It's a Hammer House of Horrors statement. "The solar system will be plunged into complete darkness." Yes Skywalker, then my plans will be complete! Thanks Dr Becky, it made me laugh, but it was thoroughly informative.😊
@Allan_aka_RocKITEman
@Allan_aka_RocKITEman 2 ай бұрын
@DrBecky >>> Great video...👍
@danieldassow6639
@danieldassow6639 2 ай бұрын
Dr. Smethurst, thank you for your excellent continued efforts to explain significant astronomical news. Your KZbin channel is one of my favorites. I was shocked when I read about you being stalked. I’m relieved that the stalker has been caught.
@MCsCreations
@MCsCreations 3 ай бұрын
Brilliant stuff! Thanks, dr. Becky! 😊 Stay safe there with your family! 🖖😊
@frankharr9466
@frankharr9466 2 ай бұрын
That's pretty exciting.
@clockwise7391
@clockwise7391 2 ай бұрын
DR BECKY, can you speak on the april 8 total solar eclipse plz? would love to hear you present it
@Delibro
@Delibro 2 ай бұрын
A necklace with moon phases? How cute for an astrophysicist :DD
@spaceyote7174
@spaceyote7174 3 ай бұрын
Just wanted to point out a correction here: Becky shows the image of Fomalhaut B, 'Dagon', as the first directly imaged exoplanet from Hubble. Dagon actually isn't thought to be a planet anymore, but some kind of dust cloud - in more recent images, it seems to have disintergrated.
@davidharris3728
@davidharris3728 2 ай бұрын
'Now on to those bloopers' as if fans don't love seeing this brilliant astrophysicist make mistakes in the most adorable ways.
@longlostkryptonian5797
@longlostkryptonian5797 3 ай бұрын
Very informative Doctor! Question, what would the impact be on the outer planets moons? Like Io, Titan…..?
@pemasherab487
@pemasherab487 3 ай бұрын
Thank you ma'am 🙏🙏🙏🌾🌾🌾
@andrewcatlin3590
@andrewcatlin3590 3 ай бұрын
Favorite videos that pop up in my subscriptions. Do you know if there are any updates on the Trappist-1 system?
@vicenzor3625
@vicenzor3625 3 ай бұрын
No atmospheres detected yet on the first couple of planets. Not looking good
@andrewcatlin3590
@andrewcatlin3590 3 ай бұрын
@@vicenzor3625 so nothing on like I think it’s d, e, and f that are supposed to be more in the habitable zone
@FleshWizard69420
@FleshWizard69420 3 ай бұрын
​@@vicenzor3625the red dwarf might have underwent a flare star phase and microwaved the system
@a.karley4672
@a.karley4672 3 ай бұрын
I've not looked at my daily compendium of ArXiv papers for a few weeks - life etc - but there's nothing to stop you doing a similar search for papers including "Trappist" as often as you like.
@DrssaFerri
@DrssaFerri 3 ай бұрын
Dr.Becky i just finished to listen to you amazing audio Book! Thanks a lot to share your knlowledge it was a great!!!!. I have a question about 1 point that you explained that was extremly interesting but that i cannot find a lot of information.... the rotational Drag Force that the BH is exercising to the matter in the surrondings, it cannot be used also to explain the increased rotation speed of stars in a galaxy?
@jllmechengr
@jllmechengr 3 ай бұрын
Ah, the Scotty method: always triple the time you think it'll take, that way when you get it done in less time, you look like a miracle worker! 🤣
@Klodvig105
@Klodvig105 3 ай бұрын
5:32 Just adding that Fomalhaut b was later found out to be an expanding gas cloud and not an actual exoplanet... but the method was still proven to be effective.
@AlphaFoxDelta
@AlphaFoxDelta 3 ай бұрын
This is so incredible JWST is a dream come true 😍
@esdev92
@esdev92 3 ай бұрын
Imagine being so important that getting photo bombed by a whole galaxy is considered a bad thing. 🤯
@KieranLeCam
@KieranLeCam 3 ай бұрын
"The time you think it's going to take you, triple it" I relate heavily to this
@gordonwallin2368
@gordonwallin2368 3 ай бұрын
Cheers from the Pacific West Coast of Canada.
@vari.interesting
@vari.interesting 2 ай бұрын
I somehow missed this video! Presented this news at an astronomy club meeting haha! 🌌
@paulmatthewduffy
@paulmatthewduffy 3 ай бұрын
Thanks @drbecky. I just signed up to Brilliant through your link. Loving the Thinking in Code course 🙂
@markxxx21
@markxxx21 3 ай бұрын
You should do a video on "fringe theories" of black holes.
@DerKiesch
@DerKiesch 2 ай бұрын
5:37 what is that ring structure you can see around Formalhaut? Asteroid belt? probably too bright for that; some kind of disk around the star (of a shattered planet?)
@Neobert5240
@Neobert5240 3 ай бұрын
You're one in a million!!! Aloha's stay safe 🤙🙏🖖👽💯
@fireburnzwhithin
@fireburnzwhithin 3 ай бұрын
So when the sun dies, it loses a great deal of it's mass raising the question, will the further out planets still orbit the sun or will they become rogue planets? Because less mass means less gravity.
@hugegamer5988
@hugegamer5988 3 ай бұрын
It only loses about 45%, so those planets just take on larger orbits and are not lost to space all else equal. Of course the additional gas they blow through also slows them down which depends on quite a few factors.
@DrDeuteron
@DrDeuteron 3 ай бұрын
You mean do they go virial?
@williamwillaims
@williamwillaims 3 ай бұрын
We can only take educated predictions. Ultimately, when the time comes, any number of things can happen. And we will never know for sure anyway. Now I'm sad 😢
@DrDeuteron
@DrDeuteron 3 ай бұрын
That’s the virial theorem. 2T = -U, so total energy is T + U = -T < 0…bound state And U is prop to M, so if M is halved, then the energy is T + U/2 = 0, unbound. Ofc it’s independent of radius, since there is no inherent length scale in the two body point particle problem. Classically, in quantum, the Compton wavelength of the light particle sets a length scale, which is why the Bohr radius is the electron Compton wavelength divided by the fine structure constant.
@rwarren58
@rwarren58 3 ай бұрын
She answers your question directly @6:30 Dr. Becky often already knows your question before you do. 💫
@TheOldBlackCrow
@TheOldBlackCrow 3 ай бұрын
A 10 minute video? Shortest one yet, but understand how busy y'all must be. As always, outstanding and fascinating. Thank you!
@DrBecky
@DrBecky 3 ай бұрын
I did move house this past week 🙃
@TheOldBlackCrow
@TheOldBlackCrow 3 ай бұрын
@@DrBecky wait... You moved an entire house?! 🤯 JK... If y'all are doing drywall, the Vancouver carpenter is a great channel.
@MainSequence1
@MainSequence1 3 ай бұрын
Honestly, it's easier for me to watch shorter videos.
@michaelsommers2356
@michaelsommers2356 3 ай бұрын
Um, 'y'all' is plural, and Dr. Becky is singular; there is only one of her.
@DerekGreen123
@DerekGreen123 3 ай бұрын
​@@michaelsommers2356Never forget the amazing editors 👍
@SystemGlitch
@SystemGlitch 3 ай бұрын
4:06 There are cardinal directions in space? North, South.. etc?
@N1inSK
@N1inSK 3 ай бұрын
"We do these things not because they are easy, but because we THOUGHT they were easy" - the programmer's philosophy.
@TuxedoMaskMusic
@TuxedoMaskMusic 2 ай бұрын
first of all ty, second of all you look beautiful today Dr Becky!
@danielbaboiu2288
@danielbaboiu2288 Ай бұрын
Actually, white dwarfs are extremely hot, some 100000K, which means that it emits a lot more in visible than in infrared - and most of emissions is somewhere in x rays. The problem is that they are extremely compact, so total energy output is low. Planets will absorb all that energy and re-emit in infrared.
@Manzarek2009
@Manzarek2009 2 ай бұрын
The Doc says, “…and it’s big,” and all I could hear in my head was, “Space is big. Really big. You just won't believe how vastly, hugely, mindbogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space.”
@seraphuziel
@seraphuziel 3 ай бұрын
I come for the science & stay for the bloopers! :D
@RummyDaLedge
@RummyDaLedge 3 ай бұрын
They just can't let go...🤔💥
@Krommandant
@Krommandant 3 ай бұрын
Write a sci-fi series about humanity surviving the sundeath and coming back to orbit and harness the white dwarf, becoming (or rebuilding) a Kardashev1 civilization
@mhult5873
@mhult5873 3 ай бұрын
Thank you for another, as always, great video. I wonder if the planets orbits of the sun (or similar star in other star systems) are affected when the sun first becomes a red giant and then a white dwarf? Will the sun e.g. loose mass and thus the gravity change?
@a.karley4672
@a.karley4672 3 ай бұрын
Mass loss is an almost universal thing for old SOLITARY stars. Things get a lot more complex for multiple stars (about half of all stars). Of course, the stable orbits around (or between) two mutually orbiting stars are also far more complex than those around a single star.
@linuxophile
@linuxophile 2 ай бұрын
Phew, for a moment got worried because I understood 5 million years...
@myuu22
@myuu22 3 ай бұрын
It's actually been found that the object orbiting Fomalhaut was a dust cloud and not a planet.
@mr.unknown1070
@mr.unknown1070 3 ай бұрын
I heard that the exoplanet was a rogue planet which started revolving around fomalhault star for a short period of time but now it's just on it's cosmic journey again as a rogue planet in the cold vacuum of space
@ahcapella
@ahcapella 3 ай бұрын
Oh wow…I didn’t know that! But YEAH…I see that the Spitzer data-plus a reanalysis of the original HST data-indicates that the light from *Fomalhaut b* is scattered sunlight off a dust cloud, instead of “planet thermal emission.” A 2020 paper by Gáspár & collaborators says that it’s, “a dispersing cloud of dust, produced by a massive collision between two planetesimals.”
@ianh452
@ianh452 3 ай бұрын
Dark lass. Nice
@terenzo50
@terenzo50 3 ай бұрын
"Anything you plan will cost more and take longer."
@ravensnflies8167
@ravensnflies8167 3 ай бұрын
you made me think about gravity at the center of the planet for some reason and when i went and looked that up, i was even more baffled than when i started. this place is mind blowingly weird. thanks for the laughs at the end:}
@user-dh6bj2me5p
@user-dh6bj2me5p 3 ай бұрын
Nothing is weird. How you interpret it can be weird.
@andrewhutchinson36
@andrewhutchinson36 3 ай бұрын
Excuse me! Haven't you forgotten something? What about everyones favourite planet, the planet Pluto!!!
@DonDueed
@DonDueed 3 ай бұрын
Ah yes, Tyler's Law: The project always takes twice as long as you expect, even when you take Tyler's Law into account.
@Christopher-ji2bw
@Christopher-ji2bw 2 ай бұрын
Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law
@JavSusLar
@JavSusLar 2 ай бұрын
Júpiter, Saturn... They may be called "Gaynor planets": I Will survive...
@Imperiused
@Imperiused 3 ай бұрын
This is an excellent science fiction prompt. The remnants of human civilization living on the moons of the outer planets after the sun becomes a white dwarf.
@ahcapella
@ahcapella 3 ай бұрын
I can imagine it now. _The human emigrants from Earth must learn to coexist with the combative fish beings under Enceladus’ subsurface ocean in order to survive!_ I’d watch that movie.
@mikajarvio7489
@mikajarvio7489 15 күн бұрын
Rubble orbits rubble, nice!
@freesamvimes
@freesamvimes 3 ай бұрын
What the thinking about the gas planets moon/ satellites surviving?
@tomaac
@tomaac 3 ай бұрын
For some reason I read that title as Death star from Star wars and was really confused.
@debasisroy7556
@debasisroy7556 3 ай бұрын
Doesn't reflectivity vary from planet to planet?
@SelbyRadabah
@SelbyRadabah 2 ай бұрын
Miss your shows Dr. When next show?
@utilityaccount1954
@utilityaccount1954 2 ай бұрын
At the other end of the planetary evolution time scale, what do you think the chances are that we'd get some pictures of TCha from JWST once they gone through the planetary formation data?
@miltonrivera2666
@miltonrivera2666 3 ай бұрын
Yes.
@Naptime48
@Naptime48 3 ай бұрын
does the suns gravity pull change when it dies? an how would that effect the solar system thats left? or is the solar system too big for it to have any effect??
@tonywells6990
@tonywells6990 3 ай бұрын
It will lose about half of its mass, blown into space, and the surviving outer planets will orbit slightly further away.
@garethdean6382
@garethdean6382 3 ай бұрын
The sun's gravity will nearly halve, causing planetary orbits to become much wider. The suns gravity binds the entire solar system.
@Naptime48
@Naptime48 3 ай бұрын
@@garethdean6382 wondering if it be enough to create rouge planets.....?
@mikehipperson
@mikehipperson 3 ай бұрын
@@Naptime48 We already have a 'rouge' planet. It's called Mars!
@Naptime48
@Naptime48 2 ай бұрын
@@mikehipperson badum tsssss (flippin auto correct!)
@stein1919
@stein1919 3 ай бұрын
and now i have "Dead Souls" by NIN stuck in my head.
@bertram-raven
@bertram-raven 3 ай бұрын
What happens to the orbits of those remaining planets?
@walkerl0007
@walkerl0007 3 ай бұрын
What book is that in the background?
@jimsvideos7201
@jimsvideos7201 3 ай бұрын
A Brief History of Black Holes, I think.
@LeeSmith-cf1vo
@LeeSmith-cf1vo 3 ай бұрын
I think it's worth pointing out that "survive" could mean different things to different people. I'm sure most people watching this channel will know you mean "will it still exist" But the conditions will likely be very different - if it had life before it very likely won't do afterwards. (The reverse is also possible I guess - it could become habitable after the death of the host star, but this would likely require an orbit change - could the dying star cause it's planets orbits to shift inwards?)
@DeepeningTheListening
@DeepeningTheListening 3 ай бұрын
The dying star will lose about half its mass, so the orbits of the planets will move outwards as there is less attraction.
@LeeSmith-cf1vo
@LeeSmith-cf1vo 3 ай бұрын
@@DeepeningTheListening yeah, that's pretty much what I thought, they may get pushed out but unlikely to fall in
@LaNeona
@LaNeona 3 ай бұрын
I wonder if hollow Saturn from the exploding rosie is correct and that's why it ate Chrysalis like a can of Goya. Like HeyZeus wearing the golden fleece as a disguise from the fates. Rings around the rosie~☆ Missing golden moons, Chrysos, deserved better.
@thedocklighter
@thedocklighter 2 ай бұрын
Just _What_ the Sh*t is _That?_ I think it's a surviving exoplanet around a dead star. Huh. Interest- Hey, wait-a-minute...
@Gooden_Eye
@Gooden_Eye 3 ай бұрын
I really appreciate your channel, fun and still very heady...off topic, but the CC follows your British accent - Hubble was Hobble, and exo planet said XA planet once 😂🙌
@rickseiden1
@rickseiden1 3 ай бұрын
I know that the difference would be a small fraction of a percentage, but I'm curious. When we give the distance between two bodies, like the Sun and the Earth, are we talking center to center or "surface" to surface?
@scottbishop7899
@scottbishop7899 3 ай бұрын
That is very positive news for our possible future selves that shows we could survive the death of the sun, gives us plenty time to develope the technologies required to get to and survive on 'bodies' within our solar system. Looking at the 'transitting method of exo-planets passing stars I was thinking are our telescopes powerful enough to differentiate between a transitting "planet/body" and sun spots or are their dimming of the light emitted by them "incosequential"? ... Just curious (not something I've seen mentioned but also maybe something we aren't looking for or unable to detect yet, same could be said for CME's or flares) lol
@GlennZucman
@GlennZucman 3 ай бұрын
Wonderful video! What are the theories/chances of the fate of the earth when the sun goes red giant? Is the earth swallowed? Does the sun push the earth into a further out orbit? Presumably not idea conditions for humans and other life, but perhaps there would still be an earth...
@michaelsommers2356
@michaelsommers2356 3 ай бұрын
Earth may find itself inside the Sun. Assuming it does not, its orbit will be more elliptical. By the time that happens, life on Earth will already have been extinguished for a long time.
@garethdean6382
@garethdean6382 3 ай бұрын
It's still quite likely the Earth will be swallowed, though its orbit will increase in width over time. There will be a 'race' to outpace the expanding sun, and at present is seems likely Earth will lose.
@AdrianCHOY
@AdrianCHOY 3 ай бұрын
Exo-planets are so common that they become uninteresting.
@supremecommander2398
@supremecommander2398 3 ай бұрын
so - if those gas giants will survive the red-giant phase of the sun - the question for me, would be: will their orbits survive? with the sun losing mass, and those giants probably gaining some of it - and solar wind pressure decreasing, i would expect orbits changing / destabilizing
@cosmisweb
@cosmisweb 2 ай бұрын
Dr. Becky, can you please help me understand how black holes can have infinite density?
@stewiesaidthat
@stewiesaidthat 2 ай бұрын
From Newton's Laws of Motion, F=ma. As the acceleration factor increases, the mass factor decreases. From E=mc. As the acceleration factor increases, the mass factor decreases. As the temperature of the mass rises (acceleration) the mass factor decreases (lost to radiant energy). Zero acceleration equals maximum density. This notion that black holes are gravitational monsters spinning put of control is patently false. It violates all of the laws of physics.
@SidneyCritic
@SidneyCritic 3 ай бұрын
There something weird with the sound, ie, it's shrill and piercing even at 25% volume.
@williamvdberg6393
@williamvdberg6393 2 ай бұрын
"Does it mean that the biggest a star gets, the biggest a dwarf star is. begin to be?"
@Kwagga_1972
@Kwagga_1972 3 ай бұрын
This is nuts
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