How Many "Earth-Like" Planets Are There Really?
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- čas přidán 6. 05. 2024
- Over recent years, newspapers have been filled with headlines such as "billions of Earths in the Milky Way alone". But how many Earth-like planets are there really?
Join us as we explore all of the different estimates for how many Earths there really are, how each team arrived at their answers, and why they seem to differ so wildy from each other, before finally we'll offer our own answer to this monumental question.
Written & presented by Prof David Kipping
This video is based on research conducted at the Cool Worlds Lab at Columbia University, New York. You can now support our research program directly here: www.coolworldslab.com/support
References:
► Youdin, A., 2011, ApJ, 742, 38: arxiv.org/abs/1105.1782
► Catanzarite, J. & Shao, M., 2011, ApJ, 738, 151 arxiv.org/abs/1103.1443
► Dong, S. & Zhu, Z., 2013, ApJ, 778, 11: arxiv.org/abs/1212.4853
► Petigura, E., Howard, A., Marcy, G. W., 2013, PNAS, 110, 19273: arxiv.org/abs/1311.6806
► Foreman-Mackey, D., Hogg., D. W. & Morton, T. D., 2014, ApJ, 795, 12: arxiv.org/abs/1406.3020
► Farr, W. M., Mandel, I., Aldridge, C., Stroud, K., 2014, arXiv:1412.4849: arxiv.org/abs/1412.4849
► Burke, C. J., Christiansen, J. L., Mullally F. et al., 2015, ApJ, 809, 19: arxiv.org/abs/1506.04175
► Silburt, A., Gaidos, E., Wu, Y., 2015, ApJ, 799, 180: arxiv.org/abs/1406.6048
► Traub, W., 2016, ApJ submitted: arxiv.org/abs/1605.02255
► Belikov, R., Stark, C., Batalha, N., et al., 2017: exoplanets.nasa.gov/system/in...
► Garrett, D., Savransky, D., Belikov, R., 2018, PASP, 130, 114403: arxiv.org/abs/1810.02847
► Mulders, G. D., Pascucci, I., Apai, D., Ciesla, F. J., 2018, AJ, 156, 24: arxiv.org/abs/1805.08211
► Hsu, D. C., Ford, E. B., Ragozzine, D., Ashby, K., 2019, ApJ, 158, 20: arxiv.org/abs/1902.01417
► Bryson, S., Coughlin, J., Batalha, N. M. et al., 2019, submitted: arxiv.org/abs/1906.03575
► Zink, J. K., Christiansen, J. L., Hansen, B. M. S., 2019, MNRAS, 483, 4479: arxiv.org/abs/1901.00196
► Jenkins, J. M., Twicken, J. D.. Batalha, N. M., et al., 2015, AJ, 150, 56: arxiv.org/abs/1507.06723
► Burke, C. J., Mullally, F., Thompson, S. E., et al., 2019, AJ, 157, 143: arxiv.org/abs/1901.00506
Video materials & graphics used:
► Atacama timelapse by Timestorm Films: • NOX ATACAMA | 8K
► Spinning galaxy animation by Huy Trường Nguyễn: • Galaxy Spinning
► GJ 357 animations by NASA's Goddard Space Flight Center/Chris Smith: svs.gsfc.nasa.gov/13266
► Wheat field footage by xbility1: • Hand on wheat field 2
► Orion nebula animation from Space.com/NASA/ESA: www.space.com/39362-orion-neb...
► Bacteria videos from Nikon Small World competition: www.nikonsmallworld.com/galle...
► TESS & Kepler animations by NASA's Goddard Space Flight Center: svs.gsfc.nasa.gov/12884
► Mars flyby footage by Jan Fröjdman/NASA/JPL/University of Arizona: vimeo.com/207076450
► Trappist-1 animation by ESO/L. Calçada/spaceengine.org: www.eso.org/public/videos/eso...
► Kepler Orrery V by Ethan Kruse: • Kepler Orrery V
Movies/TV scenes used:
► Agora (2010) Focus Features
► 300 (2006) Warner Bros. Pictures
Music used, in chronological order:
► "Selha" by Stephen Keech, licensed through SoundStripe.com: app.soundstripe.com/songs/7102
► "Waking Up" by Atlas, licensed through SoundStripe.com: app.soundstripe.com/songs/3984
► Cylinder Four (chriszabriskie.com/cylinders/) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
► Cylinder Two (chriszabriskie.com/cylinders/) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
► Cylinder Five (chriszabriskie.com/cylinders/) by Chris Zabriskie (chriszabriskie.com/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
► Music from Neptune Flux, "We Were Never Meant to Live Here" by Chris Zabriskie (chriszabriskie.com/neptuneflux/); licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
And also:
► Columbia University Department of Astronomy: www.astro.columbia.edu
► Cool Worlds Lab website: coolworlds.astro.columbia.edu
Latest Cool Worlds Videos ► bit.ly/NewCoolWorlds
Cool Worlds Research ► bit.ly/CoolWorldsResearch
Cool Worlds Long Form Videos ► bit.ly/CoolWorldsEssays
SUBSCRIBE to the channel bit.ly/CoolWorldsSubscribe
THANKS FOR WATCHING!!
#HabitablePlanets #EarthTwins #CoolWorlds - Věda a technologie
It's so nice to see an astronomy video that patiently walks you through the reasons why the best answer is "we need more data".
Thanks Ellen! We’re trying to get the pacing right so ideas can be really understood rather than just stated, thanks for watching!
The impossibly vast distances to even the closest stars to me suggests that we may never know the answers to these questions, sad but true. Absolutely great channel by the way.
With good telescopes we can at least see things. Webb should be interesting.
With our current technology is true, but what the future holds is uncertain. We are close to discover fusion energy in a few centuries and new theories that can propelled our technology to achieve more it could be possible sadly maybe not in our lifetimes 😕
I don’t think so, we have achieved things that back then we thought were impossible for humanity to reach but we made it. It certainly won’t happen in our lifetime and it would take many years to achieve it but I’m pretty sure we’re going to make it. We are an intelligent civilization, you just need to look around you to see all the things we have created. I have faith in us and we’re going to keep on trying and trying until we make it a reality.
That is, unless we can crack relativistic space travel or some exotic superluminal loophole like warp drives and wormholes.
Prof. Kipping you are a great inspiration to all...congratulations and I would like to emphasize that every time I watch one of your videos
i literally you literally blew me back to my seat giving me the feeling that Carl Sagan never left us ... thank you for everything you do ..and as always greetings from Greece
Dimitris Papadimitriou wxcv
He truly is the closest narrator to the great Carl Sagan
Well produced and I liked the fact the speaker did not draw conclusions and leaves me to my thoughts
Well the dwelling conditions have to be stabilize etaearths gravity may be lower or higher or exactly the same as earth will it be comfortable though?
He really does an amazing job on every video of giving you the info without clouding it with his bias or opinion just the facts he has at hand or we have
He is a physicist that has many papers. He seems objective instead of some one who is pushing a narrative that is trying to manipulate the facts to fit a narrative.
He doesnt bs and doesnt like the term maybe, he prefers i don't know. Which is far more accurate in his field.
Science is fact finding not conclusions.
When poetry meets astronomy, like two black holes dancing together, we feel cuddled by the produced gravitational good vibes.
This quickly became one of my favorite channels. An actual hidden gem in the informative black hole of CZcams. 🙏🏻
i put these videos on when i’m trying to sleep or take a nap. thank you for teaching me in my dreams.
Sometimes it is weird being aware of life's mysteries.
My cat, sitting on my lap, doesn't care about planets or life or anything. He has continually and habitually ignored great videos like this one!
Lol ;]
Maybe he ignores them because he knows already, he's just bored because he can't tell you all about it
With all due respect, your cat is a moron.
My cats would kick your cats ass.
There is a myth that aliens created the egyptian pyramids, but in fact, it was a group of ancient cats. They mapped out the cosmos and invented reincarnation, and are now checking our progress right from our laps.
I'd say your cat just lives in the moment.
Just found this channel and I am completely in love with it. The enthusiasm brought to each subject is genuine and gets me excited to learn.
I just love Dr. Kipping's poetic delivery, his ability to simplify complex astronomical topics, and the high production values of these videos. An automatic watch and thumbs up!
Yeah. What he said.
Apollo 16 orbited the Moon 64x (16x4). This is a synchronism of the Planet Nestor: our nextdoor neighbors where humanoids have a nest or base. Nestor is built(64=B2+U21+I9+L12+T20) with the mathematical model of FOD=6_4 compared to Earth & GOD=7_4.
64% of Nestor's surface is liquid or frozen water. 6 continents & 4 don't touch its equator/4 LARGE land masses. Their ancients' '6 Seas' & 4 oceans. 4 primary lunar phases of roughly 6 days (~6.4 days) each, therefore their lunar month is 25.5 days with 6-day weeks and 4 weeks in a 'moonth'. Their lunar year 306 days + 6 day week + 4 days = solar year 316 days. Their inferior planets at .6 & .4 AU and/or superior planets at 6 & 4 AU. Their 'Venus' orbit is 168.51 days = 26.33 days avg. month x 6.4. Besides Nestor, their solar system has 6 planets and 4 are gas/ice giants. Their '6 Classical Planets' & 4 can be seen during the day/4 cast shadows on Nestor (Sun, Moon & two planets). Etc. See PlanetNestor.blogspot.com .
GOD=7_4 or FOD=6_4 (on Planet Nestor) Theory is Seal #2 of the 7seals.blogspot.com . Only the returned Christ & Albert Einstein reincarnated could produce that. It's triggered The Apocalypse/ Revelation which is NOT the 'end of the world'. COVID-19 was added to Seal #4: S=19 (18.6) Theory.
Your voice is comforting ❤️
Thanks
Keeps saying life what is life something that breaths and grows or fish in water or plant.
Seriously man, seeing people with vision, passion and diligence, like all the scientists tackling the most complex and essential for our survival issues, really inspires me and makes feel so much better when life goes to shit. Thank you for all your work and for these excellent in depth presentations, Prof. Kipping! Keep the awesomeness coming!
Your comment really struck me-so deeply true.
Life can easily seem horrible, even hopeless, almost any day of the week. But if I visit a museum, or get a rush ticket to the evening symphony, or just watch some beautifully made documentary or science video, especially like something from Prof. Kipping, everything seems better, or at least put in complete perspective. His view of the universe is like art, or better.
I am something of a science fans myself
I’m personally glad that there’s a difference in measurement between what is considered a habitable zone. As an analyst, building a consensus is always good but a challenge of world view and of measurement is always better. And I like how you extrapolate their assumptions, comparing with known facts. Completely challenging conceptions of math and calculation and not letting it get stale is the primer of innovation. I love your teams videos, they are wonderful and full of promise.
This guy.....he's so knowledgeable and very very good at presentation......I literally love his videos
I'm genuinely surprised by this! Even though I consider myself to be pretty well-informed about space, I don't think I've ever come across mention that this was a controversial topic, despite these wildly varying studies that should've made that a given. I guess it goes to show that so many people are desperate to believe Earth-like planets are common that it just sort of...got ignored.
Honestly the quality of these videos alone are reason enough to expect a lot more exposure. But also the topics you choose and the way you explain them is just amazing. Hopefully more people will be interested in these things in the future.
Once in my life I would have loved to have had a professor so articulate and engaging
Thanks Chuck!
I second that
I can't possibly wait a whole month for the next video :(
I love this channel so much guys, thank you for everything you do ❤
Ah yes, at last a channel that at least begin to break down the possibilities of habitable planets in a realistic manner..Great presentation in a relaxing, yet accurate format. Subbed.
Prof. Kipping, thank you and your team for what you're doing! It's a huge inspiration and it's very rare, when we can enjoy such a high quality content on CZcams on this important topic! I wonder if you'd like to add the possibilty to contribute in spreading your amazing work by at least adding subtitles for other languages. Then our community could share this information with more people all over the world, who understand English not so well, and show the videos to our friends and families. That's very important! Thank you!
Really helpful and informative video. I love how you are critical of the data as well a scientist should be. My criteria for Earth-like planets are the following :
Just enough distance from the sun for liquid surface water
A Magnetic field for shielding us from Cosmic rays
A nearby body like the moon to stabilise the axis of rotation
Enough Carbon-Oxygen-Phosphorous-Nitrogen in the planet crust for building potentially self-replicating molecules
Enough of an atmosphere to shield us from meteor impacts, this implies a specific mass of the planet to hold the air above it.
Add a few hundred more! There is no such thing as a "self replicating molicue". Sorry, we are unique.
@Ashwin kelkar the star of such planets must be at the approximately same distance from the center of their galaxies as our sun is
Their star system must also have jupiter like planet (gas giant) that can save the earth like planets from meteoroid collision
@@stuartfox8499 sorry, we are not. In potentia even code that replicates and where complexity emerges is a self replicating system. Be it tell molecules or silicon encoded data. We are the only example that 'we' know of. Not unique by any chance.
@@imentor6556 the first criterion you mention is trivially met by all planets discovered, as their distance from us is insignificant compared to the radius of the galaxy.
Stuart Fox You believe we’re unique because you want to believe we’re unique. Every scientific discovery has proved the opposite since we discovered earths true place. Look at the Hubble Deep Field image. Billions of galaxies with more planets than stars. It’s incomprehensible to believe an earth-like planet happened just once. As I said, you simply want to believe we’re special because that’s what makes you comfortable.
the music really just helps to give the emotional push in the video which in turn helps you get more into the video, i love your work, keep up the amazing content man
It never ceases to amaze me every single video I've seen in Cool Worlds. Great job! Amazing!
When I finish watching one of your videos, and this one is certainly no exception, I feel like they should all be mandatory education and entertainment criteria. Fascinating and/or educational for everybody. Love it, love it, love it.
Wish I had a class teacher as awesome as you! Thank you for sharing your wisdom with the rest of us that are curious.
I really enjoy your videos, even though most of it is way above my pay grade. Keep them coming. Thanks.
Randomly came across this video and this channel and i gotta say this is the greatest random encounter in my life. I love the way you explain things and your voice is so soothing that I can’t get it out of my head since. I’ll stay, not because of the knowledge that you’re trying to convey because this kind of science is out of my field, but because of the way you say and the voice. Thank you for making these contents and I hope your channel will continue to expand furthur cause this is one of the most underrated channel i have ever seen.
What impresses me most about this channel is how fair David is with the work of colleagues.
It also provides the context in which the scientists move in their work.
In this case, how the different conclusions come about that were drawn from the available data and what technical limits their collection is subject to.
That is the great didactic achievement of this channel.
Huge fan of Professor Kipping ...love from India
Thank you David. Just love your storytelling ability combined with scientific elucidation.
Apollo 16 orbited the Moon 64x (16x4). This is a synchronism of the Planet Nestor: our nextdoor neighbors where humanoids have a nest or base. Nestor is built(64=B2+U21+I9+L12+T20) with the mathematical model of FOD=6_4 compared to Earth & GOD=7_4.
64% of Nestor's surface is liquid or frozen water. 6 continents & 4 don't touch its equator/4 LARGE land masses. Their ancients' '6 Seas' & 4 oceans. 4 primary lunar phases of roughly 6 days (~6.4 days) each, therefore their lunar month is 25.5 days with 6-day weeks and 4 weeks in a 'moonth'. Their lunar year 306 days + 6 day week + 4 days = solar year 316 days. Their inferior planets at .6 & .4 AU and/or superior planets at 6 & 4 AU. Their 'Venus' orbit is 168.51 days = 26.33 days avg. month x 6.4. Besides Nestor, their solar system has 6 planets and 4 are gas/ice giants. Their '6 Classical Planets' & 4 can be seen during the day/4 cast shadows on Nestor (Sun, Moon & two planets). Etc. See PlanetNestor.blogspot.com .
GOD=7_4 or FOD=6_4 (on Planet Nestor) Theory is Seal #2 of the 7seals.blogspot.com . Only the returned Christ & Albert Einstein reincarnated could produce that. It's triggered The Apocalypse/ Revelation which is NOT the 'end of the world'. COVID-19 was added to Seal #4: S=19 (18.6) Theory.
My goodness, your videos give me so much hope for the future than you could possibly imagine.
I like it that you just present the facts with no bias and leave me to come to my own conclution. Very rare and I thank you for that.
Another amazing video David, thank you.
When the James Webb takes flight in 2050 we may be able to get a more accurate data set.
Yeah the question is what will we get first, flying cars, fusion power or JWST :)
You mean when they begin testing in 2050?
I know. It was supposed to be launched already.
I will be 99 then !!! Can it be done sooner ?
@Anders Erikssondecent question is there a faster way to send Internet signals beyond the speed of light?
I love the longer videos. I watch once or twice for the content, and after that your soothing, calm voice helps me fall asleep. Thank you.
NOW YOU DID IT! I just wanted the snub around to see what's new in our knowledge in your special field and you fascinated me with your excellent analogies and explanations. The next weeks will go by seeing me watching ALL your videos. Well done BTW> Greetings from Florida, near the sun.
I would say to be considered habitable a planet needs to be:
In a zone that supports liquid water,
Have a good magnetic field,
Not tidally locked; experiences globally day/night to the extent that temperatures are generally averaged similar to ours.
* habitable for what?
A tidally locked planet, with water, oxygen, atmosphere and strong magnetic field could very well harbor life.
It may not be sufficient for “intelligent life” without a “day/night” axial rotation, but we won’t know until technology advances quite a bit further.
The title of the video is “earth like”. These would be places we could travel to and possibly survive. So I would add that they need to be close to the size of earth. Of course we know from our solar system that Venus is near the habitable zone and nearly the same size as earth - so I would lean towards being more conservative and throw out the more lenient studies. The bottom line is we need a better I “telescope”.
Now this, made my day! :)
I love this channel and you're whole approach to science and putting it out there. We need more of this spirit of enquiry across the whole of society. Thank You Professor and the cool worlds team
You are definitely the new Carl Sagan. Your ability to break down the knowledge is amazing. As far as the question “What is an Earth like planet?” I’d say it has to have 95% of the Earths property’s. Has to have a magnetic field, water, moon, ice, mountains, tectonic plates. The habitable zone is easy because it’s where water is. Too hot, water boils away and too cold, it freezes. It would also have to have a near perfect orbit and some rotation that’s neither too fast or too slow.
I find it hard to believe that we are the only Earth-like planet in this galaxy let alone this universe.
Almost certainly not. But the overwhelming numbers work both ways. Odds are pretty bad against another planet having all the things earth has; mag field, plate tectonics, lunar tides from a relatively big moon, life and so on. And right now we just don't know how rare any those things are.
Kevin Davis there are many Earth like planets that have been found it’s just we haven’t found life on any
We definitely aren't...
I think magnetosphere and a large moon are a must. I wonder if terrascope as you have proposed it would enable us to detect such features (the moon at least)
You are right, and the two of them go together. That large moon is directly responsible for the bulk of the gravitational friction necessary for the production of our magnetic field.
Simply love this! Solid gold🤯. Thanks, Kipping and all involved in making it happen!💙🧠
Absolutely love your video's David! always waiting for a new video too be uploaded! you should talk about bizarre objects in the universe like Magnetars
Got the notification and put the sawzall down and taking my break
Great video 👍👍👍👏 as always.
Hello From ANTARCTICA
Antarctica is my target audience, I’m aiming to become the number one science channel there!!
Absolutely beautiful. Thank you for your many uploads. I'll definitely be doing the CZcams things to tilt the algorithms in your favor. You inspire me and you humble me. Please keep doing what you do!
Wow, excellent video and astronomical analysis. Astronomy is not my field of expertise but I’ve always been enamored of the magnitudes of the measured data. Keep up the great content ! Thanks again.
The moons should be included too. I dont believe its much harder for life to evolve on a moon than on a planet.
Europa is considered a candidate that could have life in our solar system.
No exomoons have been discovered as of now. Ofc the possibility of moons makes large gas giants in the habitable zone interesting too, but we should wait until we have the technology to detect them before we make An assessment.
@@bobcloughjr Yes, a candidate because it cannot yet be ruled out. However, energy gradients are so low that the probability of Abiogenesis must be infinitesimally small. I am very much for robot missions to Venus to search for signs of previous life. As the probability of Abiogenesis on Venus should have been high in the early era of the solar system. Higher even than on Earth, if I should guess. IMHO moons are only good candidates if their rotation isn't locked in. Unfortunately, there aren't many, if any, in the Solar system. A few orbit fast enough though.
Loving this channel...👏👏👏
I'm honestly amazed by your channel. You are not only an accomplished scientist, but are also a teacher. Sure, you might get a paycheck from some big name institution, but you have extended your love of education onto all of us. You show us the wonder and beauty of the world. When the chips are down, I think you will be remembered as a Carl Sagan type. At least you will be for me.
I just seen this channel. I love your content and how you present it. Music is great as well. Keep up the awesome work we need more people like you.
I love learning from this guy! He's so much better than Neil deGrasse , bill Nye the Science Guy , Michio Kaku or any of them really. Oh and he's pretty handsome too!
He is handsome, and I was also thinking the other day, he is actually Hot!
Sexy and denior
Bill Nye is not really a scientist or astrophysicist. He just played one. He actually has an undergraduate degree in an unrelated discipline. Lately he seems to ignore science in favor of political themes.
I must confess Neil deGrasse annoys the hell out of me, his arrogance is astounding for a scientist.
@@MrRainjunky why u hate him?
I'm going with the answer 1. Life is what made our planet "Earthlike".
Exactly.
Lol... Is it not obvious that they are talking about potential?
Beautiful, informative, clear video. Nicely done!!
Great informative video. I was thinking of clicking out when I saw how long it was, but I stayed after watching for a bit, and realized that you were talking about a lot of factors that go into finding Earth-like planets that never really cross my mind!
Another interesting thing to think about would be Earth-like moons, orbiting things like gas giants in the habitable zone -- or maybe even other moons like Europa, which are much smaller than earth, but could be habitable to life. Detecting them would be near impossible though.
definitely need to listen to this again, and again and again. Your last vid on life beyond earth was a very thoughtful and exacting. I found this to be the same. I shared the last with my friends who possess intellectual proclivities. I will do the same with the current. Keep the vid's coming
there is no place like home.
until it’s gone
There are infinite places like home in parallel universes
Great video. You clearly put a lot of thought into your presentation which is appreciated.
Congrats for the great presentations that explains what we know and leaves questions to be answered! I'm not a scientist but a I love the subject and have read and studied astronomy on an amateur basis. The videos are very good for my level of education on these subjects, giving me more information (the math involved and with the analogies used) that has helped a great deal in my understandings. Thanks !!
Very comprehensive and easy to grasp, thank you Prof
Previously watched your brilliant videos i just agree with your statement : "we don't know. But there is much to observe and discover. Keep it going. I just enjoy listening to and watching your videos. ❤️❤️❤️
Prof Kipping i like your work so much that i felt a lil ashamed that I didn't know your name until recently!.lol..In any case when it comes to astronomy &/or the cosmos I get great appreciation and gratitude in the fact that you don't always say what I want to hear but the facts as you know it & what I need to hear!.. For example when you were comparing newspaper articles against true science articles concerning the amount of earth-like planets. Keep up the great work & if i don't always understand one of your videos I simply just watch it again! lol!
Great video as usual, thanks! To me it illustrates two things: there is no point in trying to quantify a parameter before you have explicitly defined what it is, and that we don't yet have the data to constrain this parameter within a couple of orders of magnitude, but we will have it in the not-too-distant future. A third thing is that the media gets things wrong, but everybody should know that already.
Tilted axis
Large moon
Plate tectonics
Water(!)
Right amount of active volcanos and greenhouse gasses
Liquid iron core
Large gasgiants in the system (meteor and comet removal)
Stable stars in the neighbourhood
+ a few thousand other factors
Probarbly boils it down to .000001%
I don't know. It may turn out that our planet is pretty mundane. We'll see. It might have more to do with the duration of time that all these factors can coexist
Water as a substance is not rare, the conditions for a stable supply of liquid water on the surface are. Maybe there could be different ways to achieve a stable solar system with few bodies guarded from comets etc. A lot of what you said could be achieved on big moons, not necessarily planets
I KNOW HUH.? THE ARROGANCE OF THESE PEOPLE
@@filipo7703 AND JUST WHO IS IT THAT YOU WANT TO PAY FOR THIS EXCITING ENDEAVOR..?
@@maddman4747 You man, we're going to come to your house and sell it for space exploration fund. Go exercise or punch a heavy bag to vent off this energy. You will feel a lot better, trust me.
I learn something new every time I watch one of your videos. I'm a relatively new subscriber, but this has quickly become one of my favorite channels to watch. Thank you Cool Worlds 😊
Shelly Scott thanks for subbing Shelly!
this video is good when you want to fall a sleep its peaceful
This channel needs way way way way way more subscribers! The video about accelerating at 1G and describing what that would be like was borderline transcending in the way it was done, if somebody knows that video name put it up for everybody to watch! This is such a great on so many different levels the most channels don't achieve
Journey to the End of the Universe!
@@CoolWorldsLab Yes! Everyone subscribed to this channel needs to watch that video!! It was actually the first video I watched from your channel :)
I shared that video with a bunch of family and friends, even ones that don't follow science and astronomy and quite a few of them said they didn't fully understand it but they we're still able to get a mental image that made them feel excited and intrigued, they start asking me questions about astronomy, subscribe to your channel so all the wonderful things I'm sure we both want in the world is renewed, new or increased interest in science and astronomy. My dad watched it, subscribed and said he watch your channel for like a week straight each night after work so he had renewed interest again. So I just wanted to share that with you without dragging this out any longer haha :-) thanks so much again for putting your heart and soul into your work and your channel for all of us 2 by default be a part of in our own way! 😊😊
this video is super thoughtful.
thanks for sharing the information ❤
Great video! I hope we find a nearby Earth-like exoplanet soon.
yes
There's not much chance of finding many planets akin to Earth in our galaxy.
@@suthinscientist9801 where did you come up with this claim ?
Our galaxy has 200 billion plus stars. Do tell.
Oh wow this is super interesting.
Thanks for watching!
Nice video! I remember when the first few exoplanets were discovered back in the 1990's, before that we didn't even know if there are other stars with planets at all and if there are, how common they might be. So even though we have little information about earth-like exoplanets, at least we now know that planets around other stars are actually common.
Excellent content. Just so well done. Thank you! ❤️
There is so much junk in the headlines that most of the media feeds us.
Thanks for bringing us real science and making it more interesting than their single sentence punchlines.
Keep up the great work, I am looking forward to what ever you decide to bring us next.
Prof.. I think you are becoming my idol.. excellent video as always good sir!
Prof Kipping, I simply love your videos. Keep up the amazing and enlightening work!
Thanks so much Erik!
Your videos are phenomenal dude. I love them, so well presented thank you. This is my favourite science channel on CZcams.
Who's being sleeping in my bedX8? I had a cosmic car once, it was out of this world. On a serious note it really was a cool car! Many thanks for the scalpel like clarity I expect from cool worlds, cool by name cool by nature, big love to your team.
I dig how English people say "I'm sat here..."
Cool
We should use that.👍👍👍
Ive seen you on tic toc recently im sure haha
Professor, I must say that i do enjoy your videos the most, not saying i dont love all the videos on this channel, but the way you can really capture my interest and keep it. I am engaged in every second, you explain very complex things in a way i can understand simply. Along with whomever put this video together, i very much like the images, graphs, and photos used. Your soothing voice also helps haha. Thank you so much for all you and your team do.
Peace&Love to you all
☮☯️🕉
Love your channel and narrating. Thank you!
this value would not mean much to me even if it were completely accurate since it does not include things like habitable moons, which might be even more common than habitable planets (or not).
so even if accurate the number of habitable planets would only represent minimum value for habitable "worlds".
you are so great.... thank you so much. l have learnt a lot from you .... this is great .
Awesome, this was a difficult concept to try and explain in accessible language!
Great video. I subscribe to the extremely rare version of habitable earth-like planets. But that simply means there are tens of thousands instead of billions in our galaxy alone. This channel and cfa are the best. Keep posting.
Cheers Jeffrey! You mean the CfA colloquia videos? Yes they’re great
I really enjoy watching your videos and research and listening to your soothing voice!
and even a galaxy has their own habitable zone ...
outer-arm (suburbs) > like where our sun sits in the milky way (*but don't go near the supermassive black hole ''sagitarius A*'' @ the center!
@@lucrativelyrics2004 why? i'd like the downtown view 😂
Possibly. We have absolutely no idea.
@@politicallycorrectredskin796 absolutely not..but in the center of the galaxy is to chaotic for life and int external of a galaxy there r not too many complex element
@@@martincastellano89 Yes that is what we assume. I just doesn't seem to me to be a verifiable rule at all. A planet in the outer rim might have heavy elements in it and sectors in the core might be stable and quiet enough long term for life.
Also, life might be different in different places. For example, subterranean life might flourish in high radiation environments in the center of the galaxy. Or aquatic life. I just think we're sometimes projecting ourselves too much onto this issue. Keep an open mind and all that.
A self aware collections of atoms. ❤❤❤❤👌
this channel has become one of my favorites lately
Best video of the month!! Amazing.
is that a tesla driving by gas stations? ^^
Yes, good one! driving by as it doesn't need fossil fuels
There are 42 Earth like planets. There you go.
Done.
@rancid sausage bring a towel
@Antee Matter stay away from Vegas kiddo statistics is not your strong suite. That being said, the gin and tonics are very plentiful there.
@Antee Matter probably better for you in the long run honestly
Very great explanation! Love it! Thank you so much!!
Love the videos, it seems too early to be making any conclusions yet and I'm excited to see what the future holds :)
If we only had a more powerful telescope that can view these initial finding in more detail. Something like a terrascope.
Where's JWST when you need it.
You rock, Prof. Kipping! Thanks for sharing
Thanks dude!
Amazing videos as well, so much knowledge, and such a pleasure to watch!
Ugh I just came from a flat earth video.....I need some real science.
You’ve come to right place :-)
Guess people wanna feel smart by watching obvious nonsense.
Flat earth = flat IQ...
intentional or accidental? Some of them videos have clever click bait titles or don't let you know it's about that particular genre untill some time in. That really pisses me off when it happens to me cause i can never recover that time in my life.
To the few awesome people who sees this, I wish you a great day and a good luck ahead! 😍
Peace and love from an artist CZcamsr 💢!💚👍
Congratulations on 300k subscribers~🎉
Love your videos, always interesting. Your class must be awesome.