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It's Just Astronomical!
Приєднався 16 кві 2016
Interesting animations about astronomy.
Created by Paul Merrell: paulmerrell.org/
Created by Paul Merrell: paulmerrell.org/
How Stars Die
What happens to a star when it can no longer do nuclear fusion? It ends up as a white dwarf, a neutron star, or a black hole.
For more information, I recommend the following books:
Stellar Evolution and Nucleosynthesis by Ryan and Norton
Stellar Interiors by Hansen, Kawaler, and Trimble
Stars and Stellar Evolution by De Boer and Seggewiss
Stellar Structure and Evolution by Kippenhahn, Weigert, and Weiss
Image Credits: NASA, ESA, CSA, STScI, T. Temim
Supernova Simulations by Adam Burrows et al. at Princeton
www.astro.princeton.edu/~burrows/scidac4/movies.html
For more information, I recommend the following books:
Stellar Evolution and Nucleosynthesis by Ryan and Norton
Stellar Interiors by Hansen, Kawaler, and Trimble
Stars and Stellar Evolution by De Boer and Seggewiss
Stellar Structure and Evolution by Kippenhahn, Weigert, and Weiss
Image Credits: NASA, ESA, CSA, STScI, T. Temim
Supernova Simulations by Adam Burrows et al. at Princeton
www.astro.princeton.edu/~burrows/scidac4/movies.html
Переглядів: 951
Відео
How Stars Grow Old
Переглядів 1,5 тис.4 місяці тому
Learn how stars change over time, about red giants, helium flashes, and more. For more information, I recommend the following books: Stellar Evolution and Nucleosynthesis by Ryan and Norton Stellar Interiors by Hansen, Kawaler, and Trimble Stars and Stellar Evolution by De Boer and Seggewiss Stellar Structure and Evolution by Kippenhahn, Weigert, and Weiss
How Stars Work
Переглядів 4,5 тис.5 місяців тому
Learn the basics of how stars work, the different kinds of stars, and why some stars are hotter and brighter than others. For more information, I recommend the following books: Stellar Evolution and Nucleosynthesis by Ryan and Norton Stellar Interiors by Hansen, Kawaler, and Trimble Stars and Stellar Evolution by De Boer and Seggewiss Stellar Structure and Evolution by Kippenhahn, Weigert, and ...
The Astronomy Event of 2024: The Total Eclipse
Переглядів 2,7 тис.5 місяців тому
An exciting rare event is about to happen in America: a total solar eclipse. Learn all about eclipses and tips for watching them. There won't be another total solar eclipse in America for two decades. Images from: Great American Eclipse (www.greatamericaneclipse.com/) ESO Griffith Observatory Jeremy Campbell Sergei Mutovkin Nikunj Patel
Creating Virtual Worlds: My Passion Project
Переглядів 2,2 тис.10 місяців тому
Research Channel: www.youtube.com/@PaulMerrellResearch New Paper Video: ua-cam.com/video/FG3LbcOGHqw/v-deo.html Project Page: paulmerrell.org/grammar/ I discuss a passion project of mine that I've worked on for many years. It was just published as a SIGGRAPH paper entitled "Example-Based Procedural Modeling Using Graph Grammars." It has many applications to people trying to design complex geome...
Entropy and Time
Переглядів 15 тис.2 роки тому
Explains how going forward in time is different from going backwards in time. For more information, I recommend The Road to Reality, Chapter 27 by Roger Penrose. Created by Paul Merrell Music: 9th Symphony, Finale - Beethoven ua-cam.com/video/EnUQJZ5ZpNw/v-deo.html Images by Frederick Sargent, Louis-Leopold Boilly, Messrs Dickinson, NASA, Taryn Elliott, Polina Tankilevitch Weather Data: earth.n...
Its Just Astronomical Interview
Переглядів 4,6 тис.3 роки тому
My friend interviews me about my channel. The rest of the interview is here: ua-cam.com/video/Atuhy0VhWmY/v-deo.html
How Weather Works: Part 2
Переглядів 81 тис.3 роки тому
Before watching this, I recommend watching Part 1: ua-cam.com/video/xXMU5KyM8YY/v-deo.html Special thanks to Cameron Beccario, earth.nullschool.net/ and Meteorologist Daniel Schreiber. Videos and Images by Engin Akyurt, Ruvim Miksanskiy, Simon Matzinger, Taryn Elliott, Zlatin Georgiev, and Bithin Raj Beck, H.E., Zimmermann, N. E., McVicar, T. R., Vergopolan, N., Berg, A., & Wood, E. F. "Present...
How Weather Works: Part I
Переглядів 231 тис.3 роки тому
Why do different parts of the world have such different climates? For Part 2 of this series go to: ua-cam.com/video/ljb83QyXVG0/v-deo.html For his data visualization tool, special thanks to Cameron Beccario, earth.nullschool.net/ Cake Decoration by Nancy Farnes, www.sliceofelegance.com/ Videos and Images by Kelly Lacy, Yaroslav Shuraev, Martin Portas, Matthias Groeneveld, Denis Linine, Kristjan...
The Coriolis Force
Переглядів 42 тис.3 роки тому
The mysterious force changing wind patterns across the globe that is caused simply by the earth rotating. For more information I recommend: Anders Persson, Back to basics: Coriolis: Part 1 - What is the Coriolis force?, Weather, 55, (2012). Anders Persson, Back to basics: Coriolis: Part 2 - The Coriolis force according to Coriolis, Weather, 55, 6, (182-188), (2012). Anders Persson, Back to basi...
Gods, Planets, and Weekdays
Переглядів 28 тис.4 роки тому
The surprising astronomical significance of the days of the week.
Is Pluto a Planet?
Переглядів 11 тис.4 роки тому
Where the controversy surrounding Pluto came from. And I give historical background on how we discovered all of the planets. Images from Ethan Kruse (ethankruse.com) NASA Diego Jimenez Lemuel Francis Abbott Emanuel Leutze Allan Ramsay Costanzo Angelini Anton Raphael Mengs Hubert von Herkomer
The Milankovitch Cycle Timeline: Where are we now?
Переглядів 438 тис.4 роки тому
This is a follow up to my previous video about the Milankovitch cycles: ua-cam.com/video/iA788usYNWA/v-deo.html. It explains where we are within the cycles now and how this relates to greenhouse gases. For more information, I recommend: Ruddiman, Fuller, Kutzbach, Tzedakis, Kaplan, Ellis, Vavrus, Roberts, Fyfe, He, Lemmen, Woodbridge. (2015). Late Holocene Climate: Natural or Anthropogenic?. Re...
The Moon is Drifting Away: Tidal Locking
Переглядів 77 тис.4 роки тому
How tides causing the moon to drift away and the earth's rotation to slow down.
Rings vs Moons: The Roche Limit
Переглядів 89 тис.4 роки тому
How tidal forces prevent rings from forming into moons.
How Ice Ages Happen: The Milankovitch Cycles
Переглядів 9 млн5 років тому
How Ice Ages Happen: The Milankovitch Cycles
How the Sun Shines: The Nuclear Reactions that Power the Sun
Переглядів 170 тис.5 років тому
How the Sun Shines: The Nuclear Reactions that Power the Sun
The Lagrange Points: The Parking Spaces of Space
Переглядів 329 тис.5 років тому
The Lagrange Points: The Parking Spaces of Space
Space is not Far: Myths about Space Travel
Переглядів 10 тис.6 років тому
Space is not Far: Myths about Space Travel
The Precession Correction: Why the Earth's Axis Moves
Переглядів 30 тис.7 років тому
The Precession Correction: Why the Earth's Axis Moves
The Earth Is Wobbling: The Precession of the Equinoxes
Переглядів 305 тис.7 років тому
The Earth Is Wobbling: The Precession of the Equinoxes
How to Measure the Sun with Ancient Technology
Переглядів 42 тис.7 років тому
How to Measure the Sun with Ancient Technology
How to Measure the Earth with Ancient Technology
Переглядів 17 тис.8 років тому
How to Measure the Earth with Ancient Technology
Nothing new--in AD 325 at the 1st Ecumenical Council of the Orthodox Church of the Roman Empire, the Spring Equinox fell on 25 March; during the discussions about the formula for calculating the date of Holy Pascha each year, the Holy Fathers agreed on "the first Sunday after the first full moon after the Spring Equinox" at which point the Pope of Alexandria pointed out that the sun had crossed the equator that year on 21 March, so that phrase was added to the kanon, and ever since that has been the date of the Spring Equinox. No doubt at some point in the future it will have to be revised once again.
Costal weather conditions are milder because of the lower altitude though
You need show this to Greta
There are no milankovic cycles cause a globe did not exist. Nor a rotation. So far, no one has been able to prove to me the alleged rotation of the earth with simple, irrefutable evidence in the form of a simple video. Requirements: from a height of 3 to 40 km, uncut, without a fisheye lens, taken at any point above the equator. The video should show that the earth is rotating. With 0.000694 rpm = 15 degrees per hour = 1 x per day around itself = = 1666 km/h = 463 m per second = 1.35 times the speed of sound Some goofballs always write to me that the atmosphere is also rotating, which is why we don't feel the rotation. If the atmosphere also rotates than we would have a hurricane from west to east of 14 times wind force 12. Then there would be no monkey or bird in the tree, indeed there would be no trees, no soil, no river, no stream and no lake. Just bare rock. The inhabitants of large cities near the equator, such as Kampala, the capital of Uganda with 4.2 million inhabitants in the greater Kampala area, or Quito, the capital of Ecuador with 2 million inhabitants, should know if the earth is spinning at supersonic speed in their area. But nothing is known. In addition There shouldn't be any airplanes coming from the east at the equator, because they would have a headwind of 1666 km/h. Aircraft flying in a westerly direction would have a tailwind of 1666 km/h. This would mean that passenger jets would than be able to fly up to 2,666 km/h. But neither the one nor the other exists. On the contrary. Flights along/near the equator in an east-west direction take more or less exactly as long as in the opposite direction. Here an example: Singapore to Addis Adeba 9.10 h, from there to Mombasa 2.20 h = 11.30 h Mombasa to Addis Ababa 2.20 h, from Addis Ababa to Singapore 9.40 h = 12 h. This is not much of a difference. If you can't provide a kind of video I described above - I assume that the earth does not rotate and therefore the day/night model and the seasonal model of the globe faction is "dead". The earth is flat and does not rotate.
Great video. One thing. You forgot to actually explain beta decay. As a neutron is slightly heavier than a proton, and due to quark sharing via the strong force, the weak force does everything it can to flip that neutron back into a proton. This is due to the neutron being slightly heavier than the proton, that causes a gradient in the Higgs field and the universe hates gradients in any form. Also free neutrons cannot exist in nature as they will beta decay back into a proton.
I just found your channel while researching for a recent video I made. You're channel is amazing, Paul: you should have millions of subscribers!
Thank you! I'm still working on those millions of subscribers.
But the planet is 15% GREENER (ie. more plants) than it was 25 years ago. How does that fit into your "theory"?
There's more CO2 in the atmosphere. Plants need CO2. I'm really not sure why you think this is a problem for my theory.
There is no global warming, just the planet.
The UN link. 😂😂😂😂 "Science is useless. "The" science is virtue."
😅😅😅
If you learn something new, it was a worthwhile day.
This is the best explanation of Milankovitch cycles I have seen, thank you!
Malenkovitch calculated all of this on paper and using a slide rule. He should be as well known as Einstein.
That's pretty bad. It completely misinterprets certain concepts like orbital mechanics (why would an object spiral into the parent body? That violates energy conversion) Meanwhile the L4 and L5 points are not necessarily stable. This is a major mistake that was made here. L4 and L5 are only stable for the case where one of the bodies is far more massive than the other body, which in the case of the system Earth-Sun is true. This video introduces a lot of misunderstanding.
0.04%
why is this only talking about the last 10,000 years in relation to a cycle that is billions of years old
This is a follow up to my original video on the Milankovitch cycles. I already covered the longer time span in my first video, but I got a lot of questions about where we are now so I added this video.
Thks buddy ...I wish I had found u 12 hrs earlier
The earths firy centre sumtimes gets drenched with the oceans that cools the core and induces ice ages.Is it the thin wispy atmosphere that creates ice ages ,or the hot molten core that ,controlled by oceanic forces,inflicts these changes?.Bob.
Why do we not investigate this theory oh you superior folk?
🙌
0:14 who did that
I put him in the credits "Bucket Thrower / Water Boy: Jonathan Timothy". He's a friend of mine.
Click bait using milankovich cycles. Anyone here that understands milankovich precession could help me out with a dilemma regarding moments of the seasons and the cycle of milankovich assumptions. If you divide the precession into 360 degrees at 180 degrees (around 12900 years ) the earth's inclination axle wobbling will change in opposite direction, the hemisphere that used to near of the sun on summer seasons now is far from and is in winter seasons, and vice versa for the other hemisphere. (Solstice june/December). But where would be at 90 degrees/270 degrees, (6400 years ) should the summer/winter seasons be happening at the equinox months and springs/autumn on Solstice months? If earth wobbling on milankovich precession at quarter of the turn 90 degrees at Solstice positions the inclination 23.5 will be in the same position as actual position now on the equinox. So every 6400 years summer/winter months would change for spring/autumn months and vice versa. Anyone could help me out here and tell me what I am doing wrong. Thank you
My video about precession gets into this: ua-cam.com/video/adzx547ptck/v-deo.htmlsi=jFbUGuD1kQDE0I8g. The issue is whether or not you're calculating the year based on the position of the earth (a sidereal year) or based on the seasons (a tropical year). Since our calendar is based on the tropical year, the timing of the seasons won't change, but the constellations in the sky in a given month will change.
Can disturbances occur? If any meteorites or anything hit or come close, what will happen then?
A comet or astroid could hit, but that's unlikely. Space is so big that it's unlikely.
So What exactly IS the source of the "rotational force" ?
There's a bulge around the equator from the rotation of the earth. Since the earth is not a perfect sphere the sun and moon's gravity pulls on one side of the earth more causing the precession.
@@ItsJustAstronomical Sorry, I should have been more clear: the supposed force that acts on the axis to "push" the axis over, causing precession -- what's the force acting on the axis?
@@ItsJustAstronomical Also: Thanks for your reply!
Gravity, see above.
Excellent expl,explanation of why we don't need to keep paying damn taxes for green shitty government policies
How much does Exxon and BP pay you to shill for them?
Nothing to do with screaming greenies, and using some gas in the car, like the hyped up climate alarmists, this is the best theory yet
Farts make a difference
Getting my BFR/IPC soon. Great video to brush up on this topic. Great job by the way.
But, but the earth is flat. Lol
Wrong.. the malinkovitch cycle has been disproved.. DO Oscillations!!
That was awesome. Right now reading Seven Eves and they were discussing LaGrange points. Couldn't visualize what was being discussed. This video helped immensely. Thank you
Thanks this is great! Was getting really frustrated with that stupid ball analogy because I couldn’t explain why there would still be coriolis force if the ball was thrown east west. Without that it’s not clear how we get from ball throwing to the cyclone picture you see everywhere
The tilt of the Earth's axis is responsible for Neanderthals. Cool.
Why I didnt learn this in school..... Awesome explanation
Best explanation I have seen!
Tell me again,Climate Change is a human making?
It absolutly. But it is not the only factor...
The current warming trend is, yes.
But time period of persession is 27 thousand years if I'm not wrong. But from this video it doesn't seem like that ?
Yes, it's 27,000 years. This video is a short correction to my other video which gets into that
If that’s the case how does land on the imaginary equator line stay warm your math ain’t mathing
Sunlight hits the equator more directly. I have another video that explains this: ua-cam.com/video/xXMU5KyM8YY/v-deo.html
Anyone seeing united Nation label on this video against misinformation, global warming is man made. Is crazy 🤪?. Thank you for your vídeos very educational. It doesn't matter what united national special interests 😂
Bro just cleared up how tides work with a 3 second insert to a vid. Chefs kiss 1:05
Humanity has cold 🥶 phobia, they afraid to talk about the cold 😢
Very well explained. Milankovitch cycle is a bit complicated but the graphics and animation make it easier to understand.
wwwwoooooooooooooooooo loove it!!! thanks
So clearly explained and well put-together.
This was an amazing animation and explanation thank you
Very many thanks indeed for an excellent and so very informative video! I found it so very amazing, so much so that I’ll be saving them all to go over them again and again. A brilliant video which everyone should watch, perhaps then they wouldn’t constantly complain at how the meteorologists/presenters always gets the forecasts wrong!!
You are my sunshine my only sunshine you make me happy
I'm not sure of the extent of in impact, but sun spots also have an effect, I believe it's an eleven year cycle.
None of this is true. The Global Warmings is caused by gas engines and whatnot. Pay no attention to what this man says and buy electric cars from China. Problem solved. Can I have my money now China? Collective we / the west are sooooo gullible. We are at war with China and we don't remotely understand the long timeframe they have been cultivating all this mis-info.
Both is true....
The thing is we need farming. We need industry. These aren't negotiable. Otherwise, we'd still be in the stone age. The mistakes made by the industrialists of the world have benefitted mankind greatly. Yes, there is a cost. Every action has effect. If we start carbon footprint madness then we will sink back into a stone age. Man is adaptable. The planet will not die, and it bounces back from whatever insults its taken over the last several million years. Volcanic activity and meteor hits have had deadly impacts on the planet. The planet survives. Short of a nova of our sun, this planet will endure. What bothers me more is environmental pollution and that includes garbage. Spilling poisons into water ways and burying it into the ground will kill eco-systems and people, alike. To me, that is much more important. Without ground water and healthy soil there is no cattle or chickens, or vegetables. We starve.
Interesting. This gives you a much better idea of the elements that influence our climate. This makes complete sense. What passes for "climate" science today leaves me skeptical. but cyclical changes due to the three major moderators mentioned above, puts the changes in context. Man made madness that passes as science today does not make sense unless you have a political agenda to fulfill and press on all others.
- "unless you have a political agenda to fulfill and press on all others." Yeah, like fossil fuel companies paying rightoids like you to shill for them. Actually no, that's giving you too much credit. You're just the gullible rube who's been conned by the aforementioned rightoid shills, and is now brainlessly parroting their misinformation.