Precession of the earth
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- Опубліковано 9 лис 2013
- This movie was created with Blender and is used in the Spitz Fulldome Curriculum for the SciDome planetariums around the world.
Precession is the wobble of the Earth which makes the poles shift position over ~26,000 years as well as the position of the Vernal and Autumnal equinoxes in the sky. This movie illustrates the movement.
Hopefully this movie gives a little more meaning to the Dawning of the Age of Aquarius.
www.spitzinc.com/
Music: Carbon Based LIfeforms - Station Blue.
www.last.fm/music/Carbon+Based...
I lack the spacial reasoning and visualization skills necessary to see this without the help of excellent computer graphics. Thank you for this. Now I understand what precession is.
me too!
exactly my case-
Remember where the sun was 50 years ago and look at it where it is today and tell me the Earth is not tilted it's very easy to understand what's going on it might look different in your part of the world wherever you're at
Whatever you may be lacking, it certainly isn't the ability to enunciate it
I was struggling to explain the precession of axis to many people. This couldn’t be more than better. Thanks a lot
This video explain everything without a single word
I completely agree; especially after reading *The Light of Egypt*
Where's the explanation?
The video is wrong, lovely as it is
ua-cam.com/video/kLfoy5V7CRE/v-deo.html
so does the Bible
Anyone else watching this in 12,800 BCE?
+Соɾу ℛ. 2016 here. Internet is amazing isn't it? I mean that we can talk to each other me being in 2016AD and you are all the way at 12,800BC. lol
Indeed. Check out The Historic Rama by Nilesh Oak @ Amazon
The Younger Drayas!
I'm watching from my ark
Watching from Europa using VPN as user hasnt made this available in my country.
For an object to exhibit precession motion, its angular momentum and the torque vectors created by the net force applied on it must exactly intersect by 90 degrees. These perpendicular vectors do not dampen each other in the diagram and cause the object to wobble. It's really amazing that the world also makes a precession movement like a top that we throw on the ground! Your simulation is terrific for explaining this, thanks.
Interesting how ancient cultures understood this process which can only be studied if experienced without modern technology. This shows civilisation is MUCH more older and was far more advanced than currently accepted. Also this shows that from earths view, that our ansestors calculated this cycle from the north/south America point of reference. I believe the New World is actually the Old World that was whipped out by the last cataclysmic event, The Younger Dryas.
The background music is just wow!
I wondered how the hell can the Sun be in Leo in the month of March....you condensed 100 pages of my textbook jargon and dozens of articles on the web into an elegant simulation. THANK YOU!
This video really helped me understand the definition of precession. Came across this term after following the works of Graham Hancock. Thank you sir
So u can see the tropic of Aries going thru the stars/constellations. The stars are abstract in size and the Zodiac signs are supposed to be 30 degrees long even. This is a great illustration of the precessional movement. U can see the Vernal equinox (0 Degrees Aries) doesnt have a permanent relationship with the stars.
Thank god for this video, trying to wrap my brain around this concept with just words on a page is difficult :/
Thank you so much for the wonderful visual treat of a hard concept with very nice music.
Excellent job...builds on itself & delivers content at a good pace.
Awesome visual, and cool music too.
WOW!!!! I appreciate you making this video to the moon and back!
Amazing, thank you
Finally, been looking for something like this for two years.
You will love randall carlson and graham hancock talking about this for days on here
Awake one little video. Totally loved it. Great work, extremely simple to understand. Thanx.
Fantastic fantastic fantastic...
Absolutely divine work..!
Hats off
Excellent video. Thank you. I will reference it in my blog article on equinoxial precession.
It was great Steven. Thank you.
Very well done. Thank you very much for the animation. I always thought about doing it to explain to others. Very good. Congratulations!
This is AMAZING! Thank you! Very grateful🙏
Great video. The only thing to consider is also the movement of the stars, they don't stay in one position all the time. Some may move slightly, some not, some will change a lot over 1-2-3 cycles of precession.
Thanks for this comment, do you know if this movement of some stars can significantly change during a 12th of one single cycle? And if yes, which ones?
@@juanrosas7842 that's just one of the many theories, we perseive some stars have "change" location but maybe we don't see yet the big picture of the cosmos as our ancestors did. the procession is also a theory not a proven thing, so a lot of assumtion but where is the truth :)
Always on the Go
It's great that video helped me a lot in my climatology studies in Brazil. Thank you.
Hello. I hope that you, as a climatology-student, can help me out with something I have wondered about for several years now:
Does the precession, talked about in this video, have any effect on the climate on earth or are we all to believe that every climatechange are man-made as we are told... ???
Here in my country (Norway), we are forced to pay climate-taxes just because some people states that the climatechanges are man-made.. Do we have hard evidence to show for?
I believe that the earths orbit, axcis and tilt combined with the distance to the sun, moon and the activity on the sun are also something that we need to add to the research, BEFORE we can state that all climatechanges are man-made...
When will we ever know the truth?
A human life on earth are approx. 85-90 years and this precession are 26 000 years... So how can ANYONE come up with an answer??
This is a field that interest me alot and I want to understand more and more. Because I believe that only with the truth, we can really start living a good life on this planet, no matter who you are and where you live...
it does have effect on the climate, but it's miniscule, as the orbits that directly affect climate is that of the Earth around its axis and around the Sun
very good explanation and animation
I finally understand precession. Your video is excellent.
very good explanation!! thanks for sharing the knowledge with us..
And such extreme precision was random.
Nicely produced
I am still not clear on this... It would have been quite useful to show the sun in this as well - because the position of the sun is essential in determining the zodiac.
this is the amazing visulization.
Wow! Very thought provoking.
Amazing, thanks
Does this mean in 13,000 years the Winter solstice will be in June?
Thank You!
Brilliant
¡ EXTRAORDINARIO ! ¡ CONGRATULATIONS FOR THIS WORK !
Nice and interesting perspective!
Thanks, helped me with the Earth Environmental Science class
Thank you so Much.
A really excellent depiction of precession of the Earth's rotation axis and equatorial plane in space!
But there's a minor technical error near the end:
The full circuit of the NCP around the NEP, starts at 2000 BC and shows 14 bi-millennial-labeled (2000-yr) "ticks" in a full circuit, where there should be 13 such marks to the full circuit (13·2000 yr = 26,000 yr).
Consequently, the next-to-last (14th) tick is shown at AD 24,000, but should be the 13th tick, and at AD 22,000.
In other words, the AD 24,000 tick should land on top of the 2000 BC tick, not fall one tick short of it.
And then, as an astronomer, I would kind of like to have seen the astronomical names of the two constellations that are shown with their astrological names:
"Capricornus" rather than "Capricorn" and
"Scorpius" rather than "Scorpio"
-- but that's really just a nit, I suppose. Especially if your aim is to reach out to non-astronomers, who will be more familiar with the astrological names.
Indeed! I have been meaning to go back and fix this mistake and re-render the video. I will correct it soon! Thanks for finding it and taking a look at the video.
+Steven Sanders Hello, Steve! Is the video corrected now?
has the video been corrected?
Hi, I'm interested in how the zodiac signs got their names and why they correspond with some of the names of the constellations. They must have been named at the time the position of the sun (roughly) was in those signs but there's 13 constellations around the path of the ecliptic and they are all of unequal size right? A little confused here.
Thank you.
+ levivelivel
OK, first off, there's a lot of detail I don't know about this, but I have some grasp of the overview of it. Basically, the 12 zodiac names go back to antiquity, and have always been tied to what are now the 12 zodiac constellations. The calendar assignments go back 20 - 25 centuries, when, as you say, the Sun *was* in those constellations in those months.
The only differences between the astrological and astronomical names, are the ones listed in my earlier comment, and are just simple variations of one another. The "13th zodiac constellation," Ophiuchus, the serpent-bearer, is there only because of astronomical mapping done in recent centuries, so that definite, agreed-upon boundary lines could be drawn in the sky, to make unambiguous, the regions belonging to each.
But the very word "zodiac" means 'circle of animals' or something of that sort, so it is clearly tied to the 12 constellations. Of course, they aren't all animals; 7 are, but 3 are humans, one is half human, half animal (Sagittarius, the archer; half man, half horse), and one is an inanimate object - Libra, the scales/balance. OK, one of the 3 humans is actually two of them - Gemini, the twins.
The history of astronomy and astrophysics is intertwined in a rather fascinating way with that of astrology, which goes back much further. The sciences per se, pretty much date back to the Renaissance; the mystical arts are about as old as time itself.
I can recommend delving into that history; it's a really large volume of stuff. For instance, astrologers used to be appointed by monarchs to 'read the stars' for various predictions about their future lives and exploits. In order to make accurate predictions of the motions of planets (especially farther into the future), some astrologers started to call on more and more sophisticated mathematics, and once that took hold, it was off to the races! Because in the Renaissance, so much new science was being discovered (not to mention the invention of the telescope in 1609 in Holland!) that the mere study of these motions became its own discipline: "astronomy."
Some of the most recognized astronomers of that era, were also astrologers - Johannes Kepler comes to mind. He was the discoverer of the three laws of planetary motion that Newton's Laws of Motion and of Gravity later confirmed as consequences.
1. I don't know when the Zodiac constellations got the names we've known them by for several centuries now; but they seem to go back to Babylon, or even further, to Sumeria.
2. Not an expert in this, but I gather that originally, those 12 constellations (which had no definite boundaries in the sky, because that sort of attention to precision didn't come along until the last few centuries) were just considered to be associated with where the Sun was during each of 12 months of the year, so that they were essentially equal in width. This led to a conflation of each month with its "solar sign."
Taken as a collection of stars that could be visualized, however much creativity it took to do so, as some animal, person, or object, these areas of the sky, along with all the rest of the sky that isn't near the ecliptic, could be mapped, and its stars named and studied. Mapping of the entire sky that is visible from mid-northern latitudes, goes back to Ptolemy's Almagest, with later revisions and additions down through the ages.
The 16th - 18th centuries saw the addition of the southern constellations, making a total of the 88 constellations that we recognize today.
So once the astronomers established their celestial constellation boundaries, the astronomical constellations of the zodiac intersected the ecliptic circle in intervals of very different lengths, and a bit of that 13th 'interloper,' Ophiuchus, intruded into that circle.
But traditional astrologers still divide the whole celestial sphere into 12 equal sectors, much like slicing a cantaloupe into twelve 30º sections.
I read this over and over in my astronomy book and didn't get it. now I get it. cool music
Thank you so much, I found the animation very informative.
wow, very nice! thanks this is a very good representation!
Thank you so much!
Great information video. Thanks
thank you Mr. Steven Sanders for this amazing animation
Awesome man
Excelente descrição do movimento elíptico da Terra e as constelações zodiacais.
The video is actually verry good. The one visual problem with it is that it is that the top yellow revolution path showing the top precession is going in the wrong direction relative to how the pole is precessing. The bottom red path is correct relative to how the south pole is precessing.
Thank you! Tech smarts, geometry, and graphics for the win!
Loved
Dope music
Good video for first understanding of precession
great!!
Thanks!
Because our calendar (gregorian) has been based on the tropical year to keep the dates of seasons the same, and because of the precession of the equinoxes, the Aries (gamma) point, where the Spring equinox takes place, has drifted to Pisces. In 13,000 years, it will have drifted all the way to Leo. But if our calendar were based on the sidereal year (exactly 360° of orbit), then our seasons will have drifted 6 months, being the summer in the northern hemisphere in December.
Excelente gracias
Crystal clear 👍
This is a very difficult concept to understand, computer animations, together with some understanding of astronomy and maths help quite a lot. How did the ancients understand this is beyond belief.
Thanks a lot, that was helpful
Earth should be shown spinning about its own axis.
This is brilliant. For fun, I wish you had started at 15,000BC - given Sphinx rainfall weathering (Shoch) suggesting it was built between 7000BC & 5000BC,, Giza's Leo-Orion orientation (Bauval) suggesting it was astronomically aligned to the stars at the time it was built (Leo)...and given we've now Gobekli Tepe astronomical pictagrams pointing to a comet-strike in 10,950BC...(Scorpio?)...
Or better still, just written what the corresponding BC (past) date was as you listed the AD (future) dates.
so you would like fantasy
well i cant do animation but i can do better than this in real tangible objects
Oh sure, it’s all about the North Pole. What a dis of the South Pole.
Unless... the South Pole doesn’t exist?
/s
Nice graphic.
Rex EdwardFairy
But you don’t need a Polaris, or any Pole star to align to true north. They were smart enough to find north with the sun.
Which I believe is Cub Scout merit badge.
Ok and how it works when the whole thing goes around the Sun?
Does that mean for every 13000 years, summer and winter in northern and southern hemisphere would change?
it doesn't change the earth's tilt with respect to the ecliptic by a lot, so the strength of the seasons wouldn't alter much.But I think it would change the times of the year when those seasons happened
I'm weirded out that everything else in Nature revolves counterclockwise, except the elliptical plane during the precession of the equinoxes. It's just what.
Sir, You make for every thing simple and easy, salute from India as an Indian.
Nice video; I like the imagery of the zodiac symbols in the cycle. I noticed in your video description that you mention the "Dawning of the Age of Aquarius", but I'm not sure many people will *get* the concept. We are currently beginning the "Age of Aquarius", because of where the sun is (in Aquarius). Each section of the proverbial pie is named a different 'age'; I think that might help the viewer who has less information.
I also like the image of the constellations 'above' the north pole, showing how our axis points at different stars and constellations. It might be interesting for viewers to know that our 'north star' changes every couple thousand years - Thuban (5,000 years ago), Vega (13,000 years from now), Alpha Cephei (6,800 BC), just to name a few.
Also - has there been any verification that 'axial precession' has any affect on the earth's climate? I've read mention of 'snow in July and planting crops in December'.
Due to precession, when Earth’s in an ice age, it can allow more direct sunlight to hit Earth’s surface in the Northern Hemisphere during summer and with that combined with obliquity which can make the tilt more extreme making more direct sunlight hit the northern hemisphere and electricity can than make earth closer to the sun during northern hemisphere summer, this makes summers far hotter which melts year round glaciers which causes global warming by reducing ice albedo. As Earth warms so do the oceans so they degass co2 from the oceans into the air which causes even more global warming melting more ice and causing a feedback loop that eventually brings us into an interglacial period. Everything is reversed when we descend back into a glacial cycle. The last glacial cycle ended 11,700 years ago and our current interglacial period, ignoring human activity on the climate, should last another 50,000 years.
I thought that was what made summers daylight light for a long time on the northern hemisphere
You're thinking of analemma, the motion of the ecliptic, Sun, and planets over the course of a year. If you were to chart the location of the sun in the sky at the same time over a year, you would roughly see a figure 8.
BELOW IS A DESCRIPTION OF BEHAVIOR IN THE NORTHERN HEMISPHERE!
THE OPPOSITE DIRECTIONS ARE TRUE FOR THE SOUTHERN HEMISPHERE AS NORTHERN SUMMER IS SOUTHERN WINTER!
The Summer solstice is the longest day of the year as the Sun travels the highest point (closest to north) across the sky it will reach during a calendar year.
The Spring and Autumnal equinoxes are equal day, as the sun is in the same position on both of these days separated by roughly half a calendar year.
The Winter solstice is the shortest day of the year as the Sun travels the lowest point (closest to south) across the sky it will reach during the calendar year.
Google "Analemma Path" in the images section for a better understanding for the above description. I hope this was helpful (and accurate enough for the critics).
Dankeschön, Спасибо❤😊🌼🌼🌼👍👍👍
all of it was explained in a good 20 seconds
Thx a lot! This animation wil be used in our Oldest optical planetarium (Zeiss Modell 1) where the Prescession is mechanical build in.
awsome video.....
Good video, but, it leaves me wondering... So if all that it rotating is the angle of the polar axis in an eq procession, what's the big deal? How does it really effect anything? Are the continents really facing one star cluster more than the cluster 180 degrees opposite it at a given point along the eq procession? What difference does it make? really? A horizontal line, 90 degrees to the polar & other line is pointing to a new location... so what?
Is this means that along with this precession, seasons are also slightly shifting possition around the sun? If so, then after some thousands of years we would see stars that now could be seen in winter, we will see them in summer? Im not sure if anyone would understand my question.
EXCELLENT VID, may I possibly use this for educational non-profit vids with all credit to you of course?
can i use your video for educational purpose
thanks
QUESTION : I have read many articles but never found the answer on my simple
question : which are the degrees of precession nowadays? why noones refer to this?
Thank in advance in case someone helps me with the answer
I wish there was a video like this for polar motion. There doesn't seem to be a decent explanation of polar motion anywhere online.
This is the real cause of weather changes and water level change. Frozen ocean ice melts into the ocean and the new frozen ice is on land where it doesn't effect water levels
Then what about the Chandler wobble and euler notations
I was confused with these precession and wobble......anyone plzzz solve it
Really helpful.for me..
...many thanx...sat nam & wahe guru 2 all of U...😇❣😎
Parabéns
Oh my god! thank you so much for this video! at first when I was trying to understand this I thought that in Capricon and Cancer the days and nights will be (at least almost) the same during the whole year. But now that I see this in 3D I can see that the only effect of it is that seasons start in different days of the year.
Now I have a question: As far as I know costelations are not the same size, so that means that not every "age" will be the same long, isn't it?
PS: I don't study Astronomy, I'm just curious and interested
Nice question! This was 5 years ago, ever find an answer?
@@calmvolatility2787 actually each age is the same length. all you need to pictures it the ecliptic, being a circle, is equal to 360*. Now, divide 360 by the 12 constellations and each is equal to 30* (2200 years). But youre right, the constellations are imperfect approximations and there is some overlap ect, but still, i think its still pretty cool they divide the sky in 12 for us
Hi how does this work with sun moves in spiral. Whats the significance of 104000 years in astrology. which seems to be 4 times these.
i just see some stuff rotating around and pointing to somewhere, but it doesnt seem to explain anything.
even the earth doesnt tilt aka wobble ??
One precession is being tagged as one wobble. It isn't talking about the daily 24 hour wobble with the moon, or monthly wobble with the moon.
show the stupid things above their mind and they will utter their words of stupidity
Lol cute
ua-cam.com/video/w5o3PFtCLoo/v-deo.html
2012isRonPaul I don’t really understand it either... Is it not related to the sun or the greater galaxy??
Lense-Thirring effect
At Timestamp 0:48, animation incorrectly shows Aries as axis starting point as of 1,000 BC. It should show it as 2,000 BC.
The animation repeats the clock precession at Timestamp 2:08 for NCP, and here it correctly shows 2,000 BC, with a ~2,000 year interval (actually 2,160 years) between each constellation x 12 constellations for a total of ~26,000 (exactly 25,920 year precession for a Platonic Year, or Great Year).
So how can Sirius move in a straight line across the sky keep in synch with the earths rotation about the axis for long periods without precession? Its an anomaly that the ancients noticed.
the best video
So great job 💐💐🌹🥀🌺
To say that the ecliptic is a plane, it's wrong; the ecliptic is a helicoidal surface generated by the continuous movement of the imaginary segment connecting the centres of the sun and the earth, while the sun moves towards a star in our galaxy, the Milky Way.
holy cow ok now i get it
How can i use this video for education purpose in our planetarium? I would like to show this wonderful movie for our students! If you don't mind, could you give me the information that how I can use this movie?
Awesome video. I wish it was showing the south hemisphere stars too.
Sir can I use this video in a presentation about Makarsankranti ,only festival in India which is based on Sun's entry in Capricorn?
Hi Steven, can I use a few seconds of this video for a UA-cam video about Polaris, the North star?
No
GAMING ZONE poor guy waited 4 years for that answer 🤣
Not quite accurate. Each "age" we pass through lasts about 2150 years not 2000 which adds up to about 25,800 years.
Does rotating at one angle effect our life any different than rotating on an axis that's oriented at another angle?
Nice question! This was 5 years ago, ever find an answer?
Besides the "zodiac" being total humbug, nice vid.