I cannot be the only one that found that whole section on Albedo very endearing and adorable. I appreciate that Jade can give us good info without being too serious about it, makes it very easy to pay attention.
Hey, I'm not a native English speaker. What's up with that "albedo" joke, I didn't understand it? I work with 3D graphics and use that word all the time.
I just discovered you and Joe Scott via Nebula this month, and I feel like I hit an absolute goldmine of grounded and informative science videos. Really great stuff that I couldn't recommend more to my teacher friends to show their students and get them interested in these complex topics.
What I find funny in science is that whenever someone who focuses on the broad strokes shows new hypotheses to be the most likely, those who focus on the minutia (which is necessary) sometimes have to change direction and regroup. I love it even more when the minutia people change the broad strokes people's direction. I just love the way science works, really.
At 8:40, I thought you were going to say : "I've been listening to "The Planets"... by the composer Gustav Holst". ;-) I love how communicative your enthusiasm is. Thank you.
I love that whole suite by Gustav Holst. I can remember playing around with a cardboard astronaut helmet, exploring new worlds in the living room while listening to it.
6:30 i love the tiny "yeah" when you say we've solved the paradox! and frankly it distresses me that your videos don't get more attention. you're a fabulous presenter and constantly both educational and entertaining. i can't be your ambassador, and i haven't the money to be a patreon, but i promise to watch more of your videos than i have from now on. and multiple times if i ever see them all.
Lmao yeah its not solved. Carl Sagan proposed this theory so people can see the this system is false just cause a bunch of people agree on conditions that are pure speculation in a time before anyone existed doesn't fix a paradon it's just a run around excuse they is no definitive evidence of a globe let alone giant ball body's and gas body's in space everything they see in the sky today is the exact same as it was over 10000 years ago and ancient history proves that the pyramids are lines up perfectly with their star system and they knew they were never moving
Just watched this with my 6 year old son...he doesn't quite get it yet, but is fascinated with your videos......its great to take him on the journey. Thank you
Can't remember if she's had these in her background before or not, but love the equations on the wall behind her. I remember discussing e^(i*pi) +1 = 0 in a fractals & chaos course in high school math class and was blown away.
They've been in a lot of previous videos. I like the design of her set (room? wherever she's filming), it's nice and clean without distractions. And yea, I had e^(i*pi) +1 = 0 explained at university and it blew my mind. Math is cool!
I love that this is such an original topic that I've never heard of (nor thought about until now) in any other scicomm channel! 👍 And quite an interesting one like always.
Wonderful video. Excellent narration and performance and video editing. Also... I find the "Jezero Crater" name funny, because in Slavic languages the word "jezero" literally translates to English word for lake. I'm pretty sure that's no coincidence.
you're more than just making videos, you're having fun while at it! this is why I like your videos, that and the fact that I enjoy uncovering the secrets of the universe
That Undying Eye contact untill it feels like your dying from trying to drink the whole thing is awesome. Your commitment and sense of humor makes these videos easier for me to digest. Iv been learning alot!
It gets even nuttier when you think about how life completely threaded the evolutionary needle on this one. Volcanoes provided enough heat and cover for cyanobacteria to evolve 3.8 billion years ago--and kept that cover going while they built the ozone layer. Without all that help from volcanoes--life might still be stuck deep in the oceans to stay safe from solar radiation. So many monumental and incredibly tiny events had to work out so perfectly for our tree of life to get going.
I was a Supervisor on the team that produced the high-purity (99.7%), low-thermal expansion silicone that coats the Perseverance electronics... the closest I will ever be to Mars. On a different note, what a refreshing drink of water it is to know that real femininity has not perished after all. It is your true power, and I congratulate you on having the strength to embrace what seems to be an ever-dwindling natural resource on this planet.
Hi Jade, It is interesting that planetary scientists have stuck to trying to solve the faint Sun paradox to planetary conditions. A colleague of mine and I showed that a 4% to 7% increase in the Sun's initial mass would entirely have solved the faint Sun paradox -- not only for Earth but also for Mars having liquid water in the early portion of the Solar System. It also solved gaseous components in lunar highland soils, very old meteorites, and a few other things. We went looking for young solar-type stars losing mass at a rate that would be compatible with this idea, and demonstrated that this could be detected. I'm surprised that our work of 25 years ago is still under debate because one has to solve the faint Sun paradox for all the planets, not jsut for Earth. By the way, love your shows!
Perimeter institute has an amazing lecture about requirement for life and habitable zone and other factors. It portrays quite impressively why life might be rarer than we think and\or maybe life as _we_ understand may not be as prevalent.
It's one of the most interesting questions in all of geology, because it ties into when plate tectonics began. I think the most plausible explanation is that the atmosphere during the Archaean was almost entirely CO2 (as a result of massive volcanism), and probably at twice the pressure than today's atmosphere. The interesting question is when and how CO2 was pulled out from the atmosphere and where it is stored now. Oxygen isotopes from sampled Archaean crust suggest that high ocean temperatures makes this process very efficient at pulling CO2 from the atmosphere into the ocean water, and then into carbonates. Subduction (plate tectonics) would then shove these carbonates into the mantle (which today would be turned into diamonds). The onset of plate tectonics is generally accepted to be in the late part of the Archaean at someting like 2.7-3 billions years ago, but there is no concrete petrological evidence of this... It's only "generally accepted" because it satisfies the young faint sun paradox, it doesn't fit at all with Earth's heat budget, when considering internal heat sources and surface heat loss.
Up and atom ❤️ Been here in this channel from the very beginning and it never failed to amuse me🙂. Hope your channel will be more successful coz you deserve it! Love lots...
Ok that was a pretty cool video. I just have one question. Volcanoes also release gasses that reflect sunlight into space. Why in this case we can be confident that the greenhouse gases had the greater effect on the plant? I'm asking because according to my understanding, the reflecting gasses usually have the greater influence on the short term. Meaning they can start a cooling which can then be increased by the oceans freezing into ice which has higher albedo than liquid water.
The sulphur aerosols are short-lived (years to decades) while, in lieu of weathering and photosynthesis, the carbon dioxide stays there basically forever. So you end up with an equilibrium of albedo-increasing aerosols in the atmosphere, while the carbon dioxide continues building up over millions years, so eventually the impact of the latter dominates.
It is not that surprising though. We know the sun is becoming hotter, but we also know that the earth (as a body, not as a surface) is continuously cooling down. It was created as a hot ball of lava, and it is radiating its internal heat away continuously, forming a crust which is therefore getting thicker. (Mars is in a more advanced state of this process, due to its smaller size). Going back in time, it means we had much thinner crust billions of years ago. Thinner crust means more volcanic and tectonic activity. Right after the planet was formed, it was basically nothing else then a string of volcanoes covering the whole planet.
It would be cool if you could discuss the even bigger paradox of how Mars was able to have liquid water when it's even further from a fainter sun. Doesn't seem to work very well.
So when mars was hot in formation and cooled over time, there was obvious a time wehre mars was cool enough to sustain liquid water^^. Also mars had a much thiccer atmosphere in the past with greenhouse gases. But these dissappeared into space after mars core cooled so much down that it loosed his magneticfield so much that the solar wind can blow the atmosphere over time away. Also mars is too light to hold such a thicc atmosphere for a long time:D The water disappeared inside the ground so a part got bound. Other parts evaporated into space because of the lack of atmospheric pressure and solar wind crashing to mars.
Mars isn't our nearest Neighbor, Venus' orbit is closer to Earth's by like 17 million miles... And don't even get me started on our "mostest-closest" neighbor (Mercury) - otherwise love the content, and always look forward to the videos.
She doesn’t realize how right she is; my paternal great grandmother came to the U.S. after the eruption of Mt. Vesuvius in 1906. It was in America that she met my paternal great grandfather. If it wasn’t for Mt. Vesuvius, I would not be here today!
Drinking the whole glass of water in one go, amazing work Jade. As usual the video is brilliant. I was wondering for the last few days when you were going to release the next video. Thanks 😊
Maybe I am missing something, but even without the given explanation, I'm not sure that this is a paradox, a snowball earth simply implies surface ice, not entirely frozen water. And we believe life may have first developed around deep-sea hydrothermal vents... Which are going to be hot, and active, regardless. Indeed this idea somewhat reflects our thoughts about Europa, Enceladus, Callisto, and Ganymede (among others). Although admittedly these do experience a far greater warming effect from their planets' gravities.
I've never ever, not even for a second in my entire life had "libido" come to mind when hearing/reading "albedo". I mean, c'mon.. however, this incident reminded me of the excellent Vangelis album that I could really use right now as background for writing.
Born too late to explore the planet and too early to explore the stars. We're taking rocks from mars back to earth. We'll bring humans to mars. But not during my lifetime. I'm so sad i won't see it!
"What is the general belief that needs to be present for life to exist?" Jade starts chugging the TALL water, looking increasingly more uncomfortable into the camera, as her lungs do not get the oxygen needed. So ... air?
Okay, if there were a lot more Eruptions, a lot more gasses would be released. However, they need not all be Greenhouse gasses. For example, Sulfides reflect light before it hits the ground, raising the Albedo. It's the proportion of Sulfides to CO2 that determines the change in Albedo. That much tectonic activity could have gone either way. (However, Carbon Dioxide is a hell of a lot more common than Sulfides.)
Venus is our nearest neighbor. Even at Favorable/unfavorable opposition, when Mars is as close as it gets, and Venus is on the other side of the Sun, Venus is closer.
I love your channel. Everything is based on scientific facts. Except for this one. It is only a theory that the earth is billions of years old….and is based on the assumption that everything is constant. Yet even you admit that something catastrophic like volcanoes could change everything rapidly…..and perhaps a coinciding worldwide flood? I think it’s much more logical that it was all created. It’s difficult to believe the Second Law of Thermodynamics and then believe that everything went from disorder to order. Nothing works that way. Thanks again for all the hard work you put into these. I do appreciate it.
@Up and Atom Loved your treatment and especially the water gag! Wondering whether you came across anything on higher (than now) intrinsic heating based upon more plentiful radioactive nucleotides in the early Earth. I did a quick google and didn’t find a comprehensive answer, though there is a LOT of young Earth creationist BS to prune away so I might well have missed it. I wonder as well what the Earth Moon collision would do to stratify the nucleotides with, I presume, the Earth getting the heavier metals and the Moon the lighter silicates and 40K & 26Al
A fascinating video as always Jade! And can I just say that I always get a little bit of enjoyment out of seeing an Australian street whenever one shows up in a RU-vid video. Feels like home! :P
The only problem that remains is that we don't know what life, in general, is (the Universal life). We don't have a definition of life. That's the single most important problem that basically nobody is talking about.
