@@Philip-qq7ql Patreon and similiar sites exist for this reason. Although to be honest I wouldn't mind skipping a sponsor ad in such well prepared and researched videos. Bah, if it weren't basically non-effective in incresing his profits I'd even stop using an adblock on his videos.
Fun fact, Earth's widest possible orbit due to the sun's mass loss is around 1.85 AU, not too terribly far off from where this white dwarf planet orbits around its own star
Man thats actually kinda sad. Imagine it hosted a civilization just like ours (unlikely but possible). Imagine some aliens discovering Earth after it turns into this kinda thing, and wonder the same thing.
whatever civ was on there, if there was one, would have had ample chance to escape but yeah a planet with life succumbing to the ire of its dying star is always sad. And assuming the planet was engulfed by the star at some point, many previous features would have been completely destroyed
The only way of assuming that would be to find remnants on other planets, as earth would have been molten for a long time, and thus everything human made would be gone.
The fact that can exist rocky planets that once were cores of gas or ice giants is simply astonishing to me. Imagine, that thing was for billions of years under a thick and heavy mantle of material in exotic states. Then all of that is stripped away and the core is exposed. I wish I could look at something similar.
I know, it is. It makes me wonder what the cores would most likely be, if the planets were initially formed well past the ‘snow line.’ Would the cores be iron? Rock? Surrounded by a shell of ‘metallic’ hydrogen? How would they evolve as they migrated inward?
5:52 that is actually fcken scary. imagine it happened to Earth. all signs of life lost, forever. no one would ever know how special our little rock was... i know Earth and everything was always going to come to and end, but this very real reminder made me sad. it doesnt help i was imagining Earth's end being from a supernova or something, but knowing Earth will still be here, just completely unrecognisable feels worse
In the case of the earth, unless humans wipe themselves out before leaving any sort of descendant, its far more likely that the descendants of humans, robots or otherwise, are highly likely to still exist if the Earth does get wiped out by the sun, and thats only if said descendants don't or humans themselves prevent that from happening in the first place. Tldr: if humans figure their stuff out, the likelihood "we" prevent the death of Earth seems higher than the likelihood of earth getting swallowed by the sun.
Not really scary Here's something even scarier to think about Think about your heart ticking like a clock but it ticks down to the very last beat before it stops and you die
If the planet was fully melted, what’s stopping that from being a second chance of sorts for life? Obviously the problem is voletiles, you would need new water to come from somewhere, but given the right system that isn’t neccesarily impossible. Voletiles will survive in the outer system and it just takes some comets getting flung into the inner system for water delivery to happen. The white dwarf may not offer much in way of heat, but if the planet is geologically active again it could be replenishing itself with an atomosphere of greenhouse gasses which would serve to both capture whatever little heat that comes off the dwarf and retain geothermal energy closer to the surface. White dwarves are quiete stable too, so the atmosphere would be less sensitive to being stripped by solar wind or flares. If enough water was reintroduced, a cold and thin but still liquid water ocean being supplied with useful chemicals from the reheated mantle wouldn’t be impossible. It’s like when you reheat last night’s dinner in the microwave, it’s not as good as last night but it’s still pretty good nonetheless.
The planet also needs to move much closer in orbit as well, though, it's not just a matter of seeding it with water and atmospheric gasses. Using our sun as a comparison, after it reaches a white dwarf phase any potentially habitable terrestrial planet (as opposed to something like Europa) such as Earth would have to move 99% closer than it already is. In other words, neo-Earth would need to be as about 4x as far from our post-white dwarf sun to have liquid surface water as our moon currently is from Earth. In addition to the above complications of replenishing its liquids/gases -- what mechanism is moving the planet inwards?
@maltheopia I was thinking the same thing, but I think snosibsnob's point was that you could theoretically have enough greenhouse gases that geothermal activity would be enough warming. I don't know how much would be required, but I just realized the problem with my assumption - Venus level - the pressure would be simply too great if that is what was required. I'm now curious to see what the math says about this
@@jeffbenton6183 yeah I don’t wanna pretend like this would be all too likely, but if worlds like titan can exist then I don’t see this as an impossibility either.
Isn't this planet supposed to be only up to 1.65 Jupiter masses? Sure NASA Exoplanet Catalog's 752 Jupiter masses is an absurd bogus. EDIT: He already did.
I am currently working on a project trying to explain how life on a tidally locked red dwarf planet would actually look like, if it is possible, and how it would be different from life on Earth (spoiler: it would be absolutely *nothing* like Earth). I have settled for a few things that make this more likely: - Age: The red dwarf would be very old, about 12 Billion years, enough time to have calmed down and stop flaring, and enough time for planets to replenish their atmospheres via heavy volcanic activity in case they did lose their atmospheres during the star's early years when it was flaring a lot - Mass: The planets would need to be significantly bigger and more massive than Earth but still significantly smaller and less massive than Neptune. I'm thinking 4 or 5 times the mass of Earth and 1.6 to 1.8 times Earth's radius, giving it a density very similar to Earth, thus meaning these planets are almost certainly rocky, but with significantly higher gravity. That way it would be easier for the planets to retain an atmosphere - Activity: These planets would need to be very geologically and volcanically active, otherwise they might just end up like Mars or Mercury. I'm not an expert on this particular topic, but I think tidal heating from the star could help keep the interiors of a planet liquid, making a magnetic field and heavy volcanic activity more likely, perhaps even a similar situation to Jupiter and Io, where Jupiter's tidal forces help Io maintain such high levels of volcanic activity. Feel free to give me some suggestions if you think it could help.
Make sure to include like other planets because it's like The Jovian system with the planets are super close together so they tug on each other creating friction tidle heating and It can warm up their cores. A realistic habitable earth-like planet. It can have a Mercury like planet aappearance but like more of a dark beige in between the darkness and the brightness there's a thin lines of small puddles with somewhat thick atmosphere. This is the most realistic. It's mass realistically is most likely to be 1.2 * Earth's mass. is equally disputed amongst the other planets it's radius kind of pens its density is it can be all up to 0.9 Earth's radius other two 1.4 * Earth's radius depends on this density. For this case it is just mostly a big iron core but very thin crust and a very thin mantle so on the tidally locked side or the day side the most would be very hot up to 200 Celsius and the night side can be up to -2 Celsius this is because this planet has a mass of 1.2 * Earth's mass and the radius is 1.1 Earth radius was very realistic. It's atmosphere mass would be half or lower than Earth's atmosphere mass. You can name the planet anything I don't name it after some Roman god or Greek god that is like a cyclops or forever day or related to something like that. Just reply on my comment and I can give you more information if you need it.
A video on the future of Mars, a video on how to save the Solar System, good stuff down the pipeline! When's the video on skyhooks and other hypothetical machines we could make to improve space travel? I wanna see that sometime.
Are planets that are swallowed by red super giants truly destroyed? Since the planets are mostly made of very dense materials while the red giants are very light for their size like balloons, isn't it possible that a planet that was swallowed just gets unswallowed once the red giant goes nova and becomes a white dwarf?
It must be also a rather cold place. The white dwarf luminosity is ~1% that of the Sun, and this planet is even twice the distance between the Sun and the Earth. If there is not greenhouse effect, Stefan's law at hand, this planet will be at around -220 C or something like that.
We could always assume it was all burned down by the star Although as our technology advances we may be able to look into their past if a civilization ever existed!
When the Sun enters its red giant phase and its diameter approaches or exceeds Earth’s orbit, would Earth really run the risk of melting? I thought that outer shell was supposed to be very (relatively) cool? Or, would the friction cause Eath’s orbit to degrade closer and closer to the Sun?
the outer layer is relatively cold but there’s just so much outer layer the luminosity of the sun will increase dramatically, which will cause things to melt
@@TheRobloxiansOfficialGroup ig its not that crazy but i keep finding like kinda crazy stuff like a spreadsheet with 16000 stars in other galaxies and this video
@@Spacemarioedition oh yeah I been watching these space videos to sleep and it's crazy I'd reccomend u another vid but I gotta copy paste the link so brb (its not a rickroll)
So... single, extremaly short and unlikely microlensing event and we know all that? I think astronomy/astrophysics should learn to put firm distinction between observation and inference.
yes it is, just because there are way bigger distances doesn’t make it any less significant not to mention it’s way further away than the majority of discovered exoplanets
Shouldn't that be "in about 5 billion years"? The 8 billion years number may refer to the period of time the sun spends fusing hydrogen into carbon, but that would include the 5 biliion years of the past.
@@Kyplanet893 I'm interested in your next video about this because that genuinely sounds like such a bizarre thing, one which could end horribly if the Earth is moved too much and as such is not on the radius needed for its temperature.
Hey hold on, if the title says it was discovered around a white dwarf, but the video says the host was known to be a white dwarf (and not a red dwarf) after the planet was discovered, doesn't that technically make the title _de facto_ misleading?
Microlensing planet hosts are complicated... AFAIK its status as a white dwarf was confirmed very late, before that its status as a WD or a K-M red dwarf was unconfirmed and uncertain, and AFTER the planets were discovered.
I love how you get right to the video. No ads or anything dumb
If his channel grows he may have sponsors but yeah his videos are great, I’ve watched every one
How is having ads a dumb thing? It means your favorite youtuber doesnt need to be flipping burgers to pay the bills
@@Philip-qq7ql Patreon and similiar sites exist for this reason. Although to be honest I wouldn't mind skipping a sponsor ad in such well prepared and researched videos. Bah, if it weren't basically non-effective in incresing his profits I'd even stop using an adblock on his videos.
Fun fact: a planet that was once the core of a gas giant that has had its atmosphere stripped away is called a chthonian planet.
Thanks for sharing very interesting
chthuluan planet
That’s pretty neat. The mythology entomology of ‘chthonian’ is fascinating.
Fun fact, Earth's widest possible orbit due to the sun's mass loss is around 1.85 AU, not too terribly far off from where this white dwarf planet orbits around its own star
very interesting :3
@@TheUndeniablyPowerfulH So the white dwarf planet probably orbited a little further out than Earth does now when its star was alive
Unfortunately, this does NOT account for gravitational drag that could mitigate orbital expansion of Earth.
Man thats actually kinda sad. Imagine it hosted a civilization just like ours (unlikely but possible). Imagine some aliens discovering Earth after it turns into this kinda thing, and wonder the same thing.
whatever civ was on there, if there was one, would have had ample chance to escape
but yeah a planet with life succumbing to the ire of its dying star is always sad. And assuming the planet was engulfed by the star at some point, many previous features would have been completely destroyed
@@Trolligi it is in shape even after getting engulfed at one point ?? 🤔
Yes, I was thinking the same thing... Sad and unsettling.
@@fly463 yeah definitely it’s still like 2 times the mass of earth
The only way of assuming that would be to find remnants on other planets, as earth would have been molten for a long time, and thus everything human made would be gone.
The fact that can exist rocky planets that once were cores of gas or ice giants is simply astonishing to me. Imagine, that thing was for billions of years under a thick and heavy mantle of material in exotic states. Then all of that is stripped away and the core is exposed. I wish I could look at something similar.
I know, it is. It makes me wonder what the cores would most likely be, if the planets were initially formed well past the ‘snow line.’ Would the cores be iron? Rock? Surrounded by a shell of ‘metallic’ hydrogen? How would they evolve as they migrated inward?
but hey, it's normal for them
5:52 that is actually fcken scary. imagine it happened to Earth. all signs of life lost, forever. no one would ever know how special our little rock was...
i know Earth and everything was always going to come to and end, but this very real reminder made me sad. it doesnt help i was imagining Earth's end being from a supernova or something, but knowing Earth will still be here, just completely unrecognisable feels worse
In the case of the earth, unless humans wipe themselves out before leaving any sort of descendant, its far more likely that the descendants of humans, robots or otherwise, are highly likely to still exist if the Earth does get wiped out by the sun, and thats only if said descendants don't or humans themselves prevent that from happening in the first place. Tldr: if humans figure their stuff out, the likelihood "we" prevent the death of Earth seems higher than the likelihood of earth getting swallowed by the sun.
Not really scary
Here's something even scarier to think about
Think about your heart ticking like a clock but it ticks down to the very last beat before it stops and you die
Keep up the good work KY. You are one of the only RUclipsrs who doesn't produce these braindead clickbait space videos.
He doesn't produce clickbait :/
What
I think they mean that Kyplanet DOESN'T produce braindead clickbait, but they had a typo.
Hey, i think you need to edit, just reminding you.
@@TheRobloxiansOfficialGroup yeah
If the planet was fully melted, what’s stopping that from being a second chance of sorts for life?
Obviously the problem is voletiles, you would need new water to come from somewhere, but given the right system that isn’t neccesarily impossible. Voletiles will survive in the outer system and it just takes some comets getting flung into the inner system for water delivery to happen.
The white dwarf may not offer much in way of heat, but if the planet is geologically active again it could be replenishing itself with an atomosphere of greenhouse gasses which would serve to both capture whatever little heat that comes off the dwarf and retain geothermal energy closer to the surface. White dwarves are quiete stable too, so the atmosphere would be less sensitive to being stripped by solar wind or flares. If enough water was reintroduced, a cold and thin but still liquid water ocean being supplied with useful chemicals from the reheated mantle wouldn’t be impossible. It’s like when you reheat last night’s dinner in the microwave, it’s not as good as last night but it’s still pretty good nonetheless.
The planet also needs to move much closer in orbit as well, though, it's not just a matter of seeding it with water and atmospheric gasses. Using our sun as a comparison, after it reaches a white dwarf phase any potentially habitable terrestrial planet (as opposed to something like Europa) such as Earth would have to move 99% closer than it already is. In other words, neo-Earth would need to be as about 4x as far from our post-white dwarf sun to have liquid surface water as our moon currently is from Earth. In addition to the above complications of replenishing its liquids/gases -- what mechanism is moving the planet inwards?
That's a lot of ifs; "if times if is and even smaller probability."
@maltheopia I was thinking the same thing, but I think snosibsnob's point was that you could theoretically have enough greenhouse gases that geothermal activity would be enough warming. I don't know how much would be required, but I just realized the problem with my assumption - Venus level - the pressure would be simply too great if that is what was required. I'm now curious to see what the math says about this
@@jeffbenton6183 yeah I don’t wanna pretend like this would be all too likely, but if worlds like titan can exist then I don’t see this as an impossibility either.
Space is so depressing for my sci-fi dreams :)
Hi! I don't comment on your videos often but I watch all of them especially to go to sleep. Thanks! 😁
I’m not sure he knows how to take that. :)
@@ronjon7942 Wdym?
@@ronjon7942go put on some long johns ronjon and mind YA DAMN BUSINESS
Make a video on that myth about the planet with supposed 752 Jupiter masses, the myth is everywhere like J1407B
he did in his top 5 exoplanet myths video
Wouldn't that be equal to a brown dwarf or a proper star?
Yes
That’s why it’s a myth
Isn't this planet supposed to be only up to 1.65 Jupiter masses? Sure NASA Exoplanet Catalog's 752 Jupiter masses is an absurd bogus.
EDIT: He already did.
I did see this on arxiv. Great video btw. I find it great that someone is on youtube creating videos about exoplanets.
If you haven't already, you might want to check out Cool Worlds as well.
i keep finding this guys videos like 5minutes after its released
I am currently working on a project trying to explain how life on a tidally locked red dwarf planet would actually look like, if it is possible, and how it would be different from life on Earth (spoiler: it would be absolutely *nothing* like Earth). I have settled for a few things that make this more likely:
- Age: The red dwarf would be very old, about 12 Billion years, enough time to have calmed down and stop flaring, and enough time for planets to replenish their atmospheres via heavy volcanic activity in case they did lose their atmospheres during the star's early years when it was flaring a lot
- Mass: The planets would need to be significantly bigger and more massive than Earth but still significantly smaller and less massive than Neptune. I'm thinking 4 or 5 times the mass of Earth and 1.6 to 1.8 times Earth's radius, giving it a density very similar to Earth, thus meaning these planets are almost certainly rocky, but with significantly higher gravity. That way it would be easier for the planets to retain an atmosphere
- Activity: These planets would need to be very geologically and volcanically active, otherwise they might just end up like Mars or Mercury. I'm not an expert on this particular topic, but I think tidal heating from the star could help keep the interiors of a planet liquid, making a magnetic field and heavy volcanic activity more likely, perhaps even a similar situation to Jupiter and Io, where Jupiter's tidal forces help Io maintain such high levels of volcanic activity.
Feel free to give me some suggestions if you think it could help.
Make sure to include like other planets because it's like The Jovian system with the planets are super close together so they tug on each other creating friction tidle heating and It can warm up their cores. A realistic habitable earth-like planet. It can have a Mercury like planet aappearance but like more of a dark beige in between the darkness and the brightness there's a thin lines of small puddles with somewhat thick atmosphere. This is the most realistic. It's mass realistically is most likely to be 1.2 * Earth's mass. is equally disputed amongst the other planets it's radius kind of pens its density is it can be all up to 0.9 Earth's radius other two 1.4 * Earth's radius depends on this density. For this case it is just mostly a big iron core but very thin crust and a very thin mantle so on the tidally locked side or the day side the most would be very hot up to 200 Celsius and the night side can be up to -2 Celsius this is because this planet has a mass of 1.2 * Earth's mass and the radius is 1.1 Earth radius was very realistic. It's atmosphere mass would be half or lower than Earth's atmosphere mass. You can name the planet anything I don't name it after some Roman god or Greek god that is like a cyclops or forever day or related to something like that. Just reply on my comment and I can give you more information if you need it.
A video on the future of Mars, a video on how to save the Solar System, good stuff down the pipeline!
When's the video on skyhooks and other hypothetical machines we could make to improve space travel? I wanna see that sometime.
this is so coooool, the only white dwarf kinda earth-sized planet i could find was WD J0914+1914 b
Nice video! I love how you are no-nonsense and straight to the point. Just subscribed
Are planets that are swallowed by red super giants truly destroyed? Since the planets are mostly made of very dense materials while the red giants are very light for their size like balloons, isn't it possible that a planet that was swallowed just gets unswallowed once the red giant goes nova and becomes a white dwarf?
sometimes (Halla might be an example of a planet that survived being inside a red giant)
@@Kyplanet893 how does a planet get destroyed by being swallowed? Is it dissolved in the red giant or blown to pieces during the nova phase?
@flydrop8822 it’s slowly vaporized over millions of years inside the star
If I remember correctly, I subbed at like 10k. Your channel is criminally underrated.
Loving the content, can't wait for next week's video to see what you come up with for Mars 👍
It's incredible how much we know about our universe, and how little we know at the same time.
It’s always a good day when we learnin about space and shit, though it gives me a cosmic level of horror
7:27 ksp ahh planet
Far future of mars video sounds neat! Can’t wait!!
damn i’m hella exited for the upcoming videos
It must be also a rather cold place. The white dwarf luminosity is ~1% that of the Sun, and this planet is even twice the distance between the Sun and the Earth. If there is not greenhouse effect, Stefan's law at hand, this planet will be at around -220 C or something like that.
Good videos. Which academic journals do you follow to keep up with new discoveries?
slick like WD-40
Space is pretty cool
They could have atmosphere after all. Red giants left a lot of mass of it's manle while transition. Surviving planets might suck some of this matter.
Cool video
I didnt know the core of a gas giant could be exposed at all. What other exoplanets could be like this? Have you talked about this in another video?
good news guys!!
HELL YEAH
possible location for space archaeology,there could be some ruins of civ in space orbiting the planet.
We could always assume it was all burned down by the star
Although as our technology advances we may be able to look into their past if a civilization ever existed!
The Cosmic Horror of Astronomy is worse than HP Lovecraft's tales. 😨
It's still a cold, uncaring, inimical gulf of unfathomable distance. But a different flavour.
When the Sun enters its red giant phase and its diameter approaches or exceeds Earth’s orbit, would Earth really run the risk of melting? I thought that outer shell was supposed to be very (relatively) cool?
Or, would the friction cause Eath’s orbit to degrade closer and closer to the Sun?
the outer layer is relatively cold but there’s just so much outer layer the luminosity of the sun will increase dramatically, which will cause things to melt
Exposed gas/ice planet cores are the stable metallic hydrogen fuel business of the future.
BRO I SWEAR I FIND ANOTHER INSANE THING IN THE SPAN OF 30 MINUTES IM GONNA IDEK WHAT
what
@@Infa_65 tahw
Dang bro what shocking revelations are u on abt- 😭🖐🏻
@@TheRobloxiansOfficialGroup ig its not that crazy but i keep finding like kinda crazy stuff like a spreadsheet with 16000 stars in other galaxies and this video
@@Spacemarioedition oh yeah I been watching these space videos to sleep and it's crazy I'd reccomend u another vid but I gotta copy paste the link so brb (its not a rickroll)
grand tour of that alien system called "solar system" when?
This is cool
Hi
Doesn't quite have a Black Hole Sun but I'll take it👍
Black hole sun, won't you come...
G⚪🌍d video
So... single, extremaly short and unlikely microlensing event and we know all that? I think astronomy/astrophysics should learn to put firm distinction between observation and inference.
bros got cooked
1:52 4kly is no distance at all
yes it is, just because there are way bigger distances doesn’t make it any less significant
not to mention it’s way further away than the majority of discovered exoplanets
Shouldn't that be "in about 5 billion years"? The 8 billion years number may refer to the period of time the sun spends fusing hydrogen into carbon, but that would include the 5 biliion years of the past.
But dont you need the star to be a yellow dwarf so its habitable
not necessarily, we just orbit one so assume it’s the best
0:12 *chirp*
Star Wars
How are we to prevent the death of the solar system? Fucking move the Earth out of the sun's radius once it becomes a red dwarf?
yes actually
we don’t need massive sci fi technology to do that, it’s a lot simpler than you think
@@Kyplanet893 I'm interested in your next video about this because that genuinely sounds like such a bizarre thing, one which could end horribly if the Earth is moved too much and as such is not on the radius needed for its temperature.
You mean 5 billion years with the red giant sun?
no
No, the red giant phase will last for about 2-3billiob years and it begins in about 5.45 billion years from now (leaves main sequence) 🌞🌅
Oh
Don't worry, it doesn't really matter its still a long time and we will have been gone long before the end of the sun and life on earth.
Billion*
He was going too fast in the video.
ok
comment
Pondo
Early
Hey hold on, if the title says it was discovered around a white dwarf, but the video says the host was known to be a white dwarf (and not a red dwarf) after the planet was discovered, doesn't that technically make the title _de facto_ misleading?
Microlensing planet hosts are complicated... AFAIK its status as a white dwarf was confirmed very late, before that its status as a WD or a K-M red dwarf was unconfirmed and uncertain, and AFTER the planets were discovered.
45th to comment.
9th comment
Hey kyplanet, when will you make a video with the new images that the jwst is currently taking? 🔭🛰️