A Habitable "Super Earth"? | Exploring K2-18b
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- čas přidán 16. 06. 2024
- Habitable planets are always a target for astrophysicists when new stars are being examined, and the recent subject of a 2-year study into objects recorded by the K2 Second Light Mission has flown to the forefront of the astronomical community. With water vapour detected in its atmosphere, many interpreted this as a sign of habitability, and now a debate is ongoing between those who believe this planet is a so-called "Super Earth" or a more predictable and lifeless "Mini-Neptune". In this video, we will examine the each type's profile and the media reception, as we again begin to wonder if our planet is not as unique as we thought it was in the galaxy.
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K2-18B: www.nature.com/articles/s4155...
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SEA is the best thing going on right now. I'm from the inner city. Hard to just go to the corner store and be safe. This is my escape. I love SEA videos of space the universe and just learning. If everyone would just take a minute to see how much more there is to life and to that fact the universe out there. Stop fighting, start living, look what awesome beauty life is, and what life could be. I'm humbled and love this channel and all you do. You help more people than you know. Thanks from Indianapolis Indiana "NAP" town.
5 stars as always, Best narrator on the subject!
Agreed and his info isn't bs which Iove. Hes my fav
After years of watching Science on CZcams, I have only just noticed how this channel has produced many of my very fave videos.
The one on The Great Attractor is THE best video EVER!
An amazing video from an amazing channel... I used to watch your videos during school for background noise to help my ADHD and now I've watched them all and learned so much ❤️
"The most likely explanation is often the most boring." Well put.
I think we should get rid of the arthropocentrist position we always have done. Who's to say Life not as we know it can form on these planets? Or what if all the life on this particular planet are extremophiles? Why do we jump to conclusions that this planet cannot support life when life has managed to toughen up to the extreme pressures in the Mariana trench, so why not this planet? Just seems like scientists are too pessimistic and don't give any open mindness to these questions at all (and no, i believe in science and it's capabilities, I just have a problem with Arthropocentric Scientific Pessimism.
@@kelseiilive6115 extremophiles need room to become extremophiles in the first place.
It's really not a pessimistic view, studying an exoplanet is incredibly hard for now, let alone detect life, so scientists tend to put their time and effort on finding life that is similar to what we are familiar with (y'know, DNA/RNA, liquid water yada yada...).
It's not pessimism, it's scepticism. We know life requires water, so we look for water. Sure there could be life on ammonia or whatevery but until there is evidence that that life actually exists, we aren't going to believe it exists. What is your position? That you HOPE that there is more life than we think? I also hope, but it doesn't mean I know what that life is actually like.
Yeah and the meaning of life could end up being an awful letdown.
@Bradley_UA *life as we know it requires water.
And before the inevitability of someone saying that im splitting hairs; there is a significant difference between the statement "we know x needs y" and "x as we know it needs y"
ur legit like one of my top 3 fav channels on youtube. idk what the other 2 are or what order theyre in, but ur in there. might be my favorite haha!
Great video! I wish it is a habitable exoplanet.
Only for Sayans and Super Sayans people, unfortunately.
WOW ! thank you again for such a fine video , and for the time you put into all of them to make them so high quality !1
2017: Will silent clubstep be verified?
2019: Can we colonize an extra-terrestrial planet?
Only real OGs remember 😎
SEA epic gaymes
Remember Crimson Planet. This is that now. Feel old yet
@@sea_space i remember xd
SEA yes
SEA is a class act! Thank you for all you're hard work ,research and effort, i love this channel im like a kid at Christmas when i get an alert for a new video, up there with the very best if not the best.
Be it 2 years old or brand new, when SEA uploads something I'll watch it at least twice over. You really do incredible work with a constant consistency that really makes me feel like I'm watching a National Geographic feature documentary lol
Begs the question could such a planet hold a earth size moon if yes raises the odds of finding a terraformable moon orbiting a super earth
That sounds like a badass potential syfy movie.
I am not sure, but I think not. Just look at the biggest moons in our Solar System. Jupiter's Ganymede is bigger than our moon and the planet Mercury, but nowhere near Earth, Venus or Mars size. It might be simply a coincidence, but I think now. However, please correct me if I am wrong.
Or the moon can be the earth orbiting a a planet.
@@tjlnintendo I'd definitely watch the earth colonists having to use human controlled armoured core like units because the planets gravity something crazy like 8g be like have 7 more of yourself sitting on top of you at all times .
@@KonradofKrakow ganymede is larger than mercury but less dense if mercury was in Jupiter orbit for example that would be a good colony site at near Mars level gravity better than lunas gravity level unless you want a race of belters like in the expanse who can't even visit earth
Bro I absolutely love your documentaries keep up the good work.
How does this channel Not have millions of subs!?!?!? Simply the best space channel...
Excellent video! Thanks for clearing up the media's mess.
Love the vids man, don’t get me wrong your gd videos were good but these are better, proud of You keep it up! ♥️
theyhatejoseph 69 who the hell are u to be proud of them! They don’t need to make u proud, u need to make them proud!
Man you are fasinatingly great with these videos. They are so balanced and scientificly oriented. 👍👍👍
SPACE PHYSICS!!!!! Awesome video as always Sea....
You’re voice is perfect for these things! Please do more I’ll be looking forward to it!!!
Your*
Just wait till James Webb goes into space.
It's up there now
@@derewe2094And it may have found signs of life on this planet!
Worth the watch
Thankyou very much, very interestingly
In other words they have no idea
Exactly the case with most planets they study
I'm really liking these videos on exoplanets. Hell, they're fascinating and we're bound to find many surprises for every one we discover :)
The future has many scientific surprises.
You're telling me news sites are willing to bend the truth for the sake of a good story? Wow, never would have guessed that'd happen.
:surprise: If you haven't gotten it by now, I'm surprised. I didn't expect this to show up on Sea's channel.
Man, you have BY FAR the best science-astronomy channel in youtube. It is great to see how you handle the information and DO NOT GIVE ANYTHING FROM GRANTED, making sure that most of these "ideas" are just theories based on mathematical calculations, with not conclusive evidence in sight. Keep the good work.
great video
Honestly, stuff like this both excites me and scares me
Same here.
@@roderrickgaming9949 hell yeah
As the planet is a Super-Earth or a mini-Neptune with 8 times the mass of the Earth, its gravity would make it most difficult for any intelligent life to escape its gravity with a spacecraft or rocket. So, there is no need to worry about hostile aliens.
@@robertschlesinger1342 thank god
Hopefully we can someday invent radio signals faster than light?....
Excellent
I really like these debate videos
Great Video. is there an estimate on how much more gravitational pull would be on the surface of a planet that has simular element structures than the earth while being x8 the mass ?
Now we just need to get there..
Oh.. right..
Nice vid tho, i loved it, and you spoiled us with details
Another great vídeo, thanks!
This is relevant again in a huge way.
I’m excited to see what JWST can find out about it
finally im early good video
You should make a video on the Voynich Manuscripts
Anything recent only videos about this planet from 1 year ago?
An update is needed after the recent news!
asking sea to narrate a documentary about life/space on every upload until he does
day 1
wait what do I have to do?
@@sea_space something like planet earth or even better some sort of space documentary
@@sea_space damn you replied to someone with a zero two pfp
@@AA-zm9hk i don't see the problem here
@@patzoid2782 you didn't get it bud
Yo this is cool but its spooptober time to get spoopy
Sea, your videos are simply amazing. In my opinion you rival Kurzgesagt, TierZoo, Wendover Productions, Reallifelore and all the other science channels.
Able559 He doesn’t rival them, he makes better videos than them. End of.
@@cdmcmxcvi1249 In many aspects, yes
i remember i did a project on Kepler 62 or 52f in 5th grade
There is a lot of planets out there . And empty ? That's impossible someday they will come to earth
I hope i live long enough to see some form of interstellar travel possible. The possibilities of what could be out there intrigues me so much. Even a real photograph of a planet outside of our solar system would be amazing, yet currently impossible.
Same bro this kind of fascinates me
In theory we couls get a picture of an exo planet using a solar shade, and some fancy optics
It would probably take Years to develop, James Web has been in development for over a decade
don worry you'll be revive once we are a type 4 civilization
They say we cannot detect a magnetic field of a planet,
but, indirectly, surely a planets atmospheric composition must give clues
5 years later: this hycean planet may very well be the first place we find life in the universe outside of earth!
Why the quick shot of hanging laundry at 4:00 lol? Quite odd, but funny :)
I really enjoy SEA videos; l think the discovery of atmospheric oxygen on an exoplanet would be a better indicator of organic life since oxygen has to be continually replaced because of its reactivity.
Plant photosynthesis constantly produces the O2 earth.
What about absorption bands at the IR band for example, not just the color of the planet's atmosphere?
Years from now, the new class of space telescopes will detect a planet Exactly like Earth and that discovery will stun the world.
I love the astrophysics direction you’ve taken
We need to implement some type of real punishment for media that release inaccurate information. They are the root of most our problems.
So basically, CNN gets shut down first right?
Just a question how exactly would Earth look from outside of solar system? Would it just appear like a dark blue ball or would you even be able to spot continents and water at all? It's safe to assume that while humans are looking out at the stars in the universe there most likely lifeforms looking back at our solar system. However if there are other lifeforms why haven't we seen any? If there are other lifeforms in the universe it would be very likely there are some far older than us. At some point do they stop looking for other lifeforms? It seems like a very plausible explanation. If a lifeform isn't even able to leave their own planet why would anything even bother with it(unless they're equal or less than us humans).
Are your videos really good?
Yes
I couldn’t agree more with you. Excellent video. Keep up the wonderful work and research you do.
Why are you so underrated :( you deserve the regnition
Just a question, if out solar system's planets have moved and changed orbits with each other, wouldn't the same have happened to these other planet systems?
This video deserves an update after what James Webb found in the atmosphere
damn this popped up in my recommended at the right time
Same mate
Does the k2b system have other close by planets?
Cuz it could be that instead of a few smaller planets like our system, this system instead has 1 big one? Since it doesnt have a jupiter to bounce things around gravitationally.
Also a question. Why is jupiter a gas giant? Is it just cause of its distance? Why cant there be a rocky planet the size of jupiter? Im well aware of hot jupiters in other systems but theyre all described as gaa giants whose gases are slowly boiled away somehow. Does this process turn them rocky then? I mean that gas has to go somewhere, is the sun taking it? Granted i dont know much about hot jupiters so pardon my slim knowledge.
I doubt my musing and questoons will be answered but if anyone is reading this; hopefully it gives you some new things to think about and questions to ask.
I feel bad, he'll never escape a childrens phone game
Guys he's slowly becoming Vsauce4
Ur channel is better without getting tbh
Can you imagine the gravity.
You wouldn't even be able to roll over
If there's people they'd probably be really small and strong lol
It’s probably twice as strong as earth
I hope so but sadly we’ll never live long enough to find out
long enough to learn more about it though.
Too late to explore the world
Too early to explore the universe
Just in time for spooktober
@RazorIst Why do people always think that? Antimatter is just like regular matter but reversed. The electrones are charged positive and the protons negative. That's all
Able559 antimatter is a 100% efficient source of energy, if we can use it to create energy it will give us so, so much that we might be able to use it for a ship or something to fly there
b4U DeanoidInnit
If only we could make it cost less than a few trillion dollars per gram to produce
I'm sure life can evolve on superearths, they would evolve with stronger bones and muscles to deal with the higher gravity. I don't like when people assume all life in the universe has to be identical to earth's.
The problem is we can discover all the earth like planets we want. Even planets that are ideal for life. But there's that little nagging problem of actually being able to travel to one. Obviously the speed of light is far beyond our reach at least for now, so until we come up with clever alternatives in traveling to these planets, all we're doing is observing and recording planets that we physically can't even reach. Finding a planet is one thing, getting there is an entirely different thing.
That’s a good valid point. Another is that the conditions may be ‘earth like’ but what happens if we get there and find every plant life is toxic? What if there are dangerous organisms there we are not prepared to deal with due to these conditions? It will become much more complicated as we make these discoveries.
I don’t think I’d find it perplexing if there were strange creatures on these ‘perfect earth’ like planets, creatures that might even defy our understanding. What if there was an earth with the perfect temperature, but the water was full of toxic algae and land masses covered by completely toxic plants, trees: shrubs, or even hybrids of animals and plants or plants and fungi? The possibilities are endless!
K2B12 planet is fascinating. I’m just wondering the new telescope that recently left earth to travel a million miles to its destination will it be able to detect that it is truly a habitable one. Andy B Mississauga
What are the pants about in 3:59 ?
The idea that the high gravity means no life makes no sense to me. People for some reason tend to believe that every planet is going to have life like on Earth, this simply isn’t the case. Just like creatures on Earth evolved to survive its conditions, complex life could also evolve on Super-Earths, they would evolve to be lower to the ground, with stockier and more muscular build and larger hearts. Just because a planet isn’t just like Earth it doesn’t mean life is impossible there. Planets that are extremely hot could have creatures that have highly reflective skin in order to help keep the temperature cool, and creatures on cold planets could evolve to have very thick layers of skin or blubber or have very thick fur/hair. LIFE ALWAYS FINDS A WAY! Anyway great video as always.
Exactly
If we do move there one day I hope we come up with a catchier name than K2-18b
I always watch these two or three times over, great info, no hidden political agenda. Brilliant, just brilliant.
Watching a sea video late at night while eating cereal is great.
It is still cool! 😀
At what point does Titan pass between us (the Earth) and its parent star (the Sun) so that you can determine its composition from the light filtered through its atmosphere?
We don't need to analyse passing starlight on Titan, we've visited it.
@@sea_space i know... we have live video and audio from the lander.. i asked you this because you used Titan as an example for explaining our knowledge of atmospheric composition using this method of parent star light filtering.
An update pls, after JSWT found dimethyl sulphate
Damn a lot of people have been asking about this! I’ll look into it
wait... since we are used to the rotation of the earth, would we get dizzy when entering a new planet whose rotation is at different speed?
Hilkiah Urim S. Maguicay nothbestatart no we would’nt. We would not be able to perceive the movement of the planet while we stand on the surface.
The mass of the planet would be an issue for us due to stronger gravity. Most likely you would not be able to survive on that planet given our biology developing for 1G.
You forgot to talk about that it orbits an red dwarf which are spraying with solar flares, also most planets that orbit close to its host star might be locked so theres permanent sun light on the side facing the sun and cold and dark on the other side. But it might be possible because scientists says that the star arent that active.
Yay! A skeptic just like me.
So you're saying we can move right in & it'll totally be fine, right
Even if we find a habitable planet, we're never getting there.
hi!! :)
UNDA DA SEA
This is a truly amazing video I wonder why more people havent watched this yet😔
I wonder what the beings that live there named their planet or if they can see ours, what they named our planet.
I don’t understand how they say life couldn’t exist under the gravity we’ve only observed life in one place what’s to say it couldn’t develop in different ways
Exactly
As the Smithsonian has pointed out, we don't even know for sure that chemistry is required for life. Scientists have demonstrated how you could create a genetic system based on the orientation of magnetized particles in a chain which can be duplicated. We make a lot of assumptions based on one single data-point, that being Earth and Earth-life.
MMMM YEAH
We do find life in the most unlikely places, under kilometres of the Earth's crust, or inside nuclear reactor cores. To definitively say life, even complex multicelluar life would be impossible to evolve in these conditions seems rash, given the previous examples.
Saying that I agree it's highly unlikely any complex life would evolve on a Super Earth, but we just can't know for certain.
Liked the video before watching because I knew it'd be good.
are you the next Vsauce? wowie!
vsauce content is good but he is annoying as hell, this is better imo
5:52 - Is the earth spinning backwards?
Scientists: we found a planet, we don’t know much about it yet though.
The News: ALIENS FOUND ON EARTH LIKE PLANET. HUMANS PLAN TO VISIT PLANET IN 2021
Its wild the think other life forms will look at our planet and think Earth has intelligent life forms. Once they intercept our internet signals and see Belle Delphine videos, they will conclusively know intelligent life could not be found.
Video Idea:are we the only ones?
Neforus yawn
Discovering a planet in the habitatable zone of an alien star only to find out it’s a super earth. So disappointing.
So, while it’s fun to speculate and opine about this one, there’s always another one tomorrow or the next day.
👍
In short - no idea!
"2 times the radius but 8 times the mass"
You make it sound like its surprising but it is proportionally equal to earth. 2^3=8