Why Aren't There Eclipses Every Month?
Vložit
- čas přidán 20. 03. 2024
- The moon orbits the earth once per month, which means the moon is on the sun side of the earth every month. So... "why aren't there eclipses every month?" is a question we will answer in this video!
This Product is supported by the NASA Heliophysics Education Activation Team (NASA HEAT), part of NASA’s Science Activation portfolio.
The material contained in this document is based upon work supported by a National Aeronautics And Space Administration (NASA) grant or cooperative agreement. Any questions, findings, conclusions or recommendations expressed in this materials are those of the author and do not necessarily reflect the views of NASA.
Support MinutePhysics on Patreon!
Link to Patreon Supporters: www.minutephysics.com/supporters/
MinutePhysics is on twitter - @minutephysics
And facebook - / minutephysics
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich - Věda a technologie
Very kind of him to account for any moon dwellers in this explanation. Forward thinking.
I'll thoroughly enjoy this video even in 2084
Yeah
around that time period it was thought that all planets/celestial bodies were inhabited by life, until we eventually realized that that was silly.
@@thezipcreatorI didn't even think of that, I thought it was just a joke from minutephysics but yeah no, it's true.
It would be nice to get a perspective of an eclipse from the vantage point of the moon.... We likely will in the near future.
My guy didn’t want to look stupid in case there ended up being “moon dwellers”. Love it.
I had a question as kid that why wont’t planets cast shadows on other planets
@@captainjackson18 They do, and they're called transits.
They can, if they are close enough. In practice, almost none are close enough
@@captainjackson18 That's actually how people detect planets in other solar systems! The method is Transit Spectroscopy. They measure the intensity of the light of a star and look for any dips in light intensity caused by planets passing in front of it (relative to us). The planets are casting their shadows on us from across space!
Futureproofing.
It's worth mentioning that the nodes of the Moon's orbit shifts every year thus making the time of eclipse seasons shift accordingly.
Ah right, i did a double take on that one. Would be cool to have an 'eclipse season', though.
This is a really important point!
What causes the nodes to shift? Is it just a chaotic 3-body system? Or is there some simpler physics involved?
Just here for the answer ❤
I would be curious too. Is a a constant shift, so many degrees per year? If not, then what causes variation in it?
1:18 I like the touch of red hue of Earth's shadow accounting for its atmospheric diffraction
And subtly explaining Lunar eclipses without it being the main point of the video
that last 17 degree explanation was so spot on that my puny brain finally understand
One of the very first question came to mind when i first learned about Solar System as a kid……….Finally got the answer after 19 years😅😅
Yeah all of the models and diagrams make them look like they are in the same plane generally
Same and I always thought the reason would be similar to what explained in the video. I never checked it though
Funnily 19 years is a pretty important length of time in eclipses as it's the length of a Soros cycle iirc
The last part of the explanation is that yes, you'd still get about 1 to 2 eclipses a year, but 75% of the Earth's surface is water, so it's even rarer for it to occur over land, let along inhabited land. Eclipse cruises are also totally a thing.
You never bothered to look it up?
Personally, as a moon dweller, I am glad he remembered us in his explanation. I do love seeing our shadow on the earth.
Stop hoarding all that moon cheese or we'll stop sending you robots to eat!
The moon is not a planet! czcams.com/video/13R-zKGrXvg/video.html
So why don't you send us pictures of it? The videos I have seen from low Earth orbit of the moon's shadow on the Earth are amazing!
Seriously, were any of the (before my time) 1960's trips to the moon timed to coincide with eclipses? It would be cool to see from the moon as the moon's shadow crosses the Earth. I also suspect that a lunar eclipse would appear far more spectacular when viewed from the moon that when viewed from Earth.
As a moon dweller, how well did Lucien Rudaux do with his painting of what a lunar eclipse would look like, when viewed from the moon?
I love it when the "it is no wonder" section actually is "no wonder". Looking at you math books and their "left as an exercise for the reader" bits
The times it was "left as an exercise for the reader" and instead I just didn't get it.
We do live in a 3d world guys
Maybe
says the person in my 2d computer screen
Solar system is pretty flat though
truly a multidimensional experience being provided here
Let’s see: Mercury…Venus…Earth! I guess you’re right. 😃
Astronomy For Dummiez (Original Edition)
Yeah
Astronomy for Dummieth
*Astrophysics for Morons*
but planets are plants
and gravity is gravy
and Uranus is... oh my gosh!
true..
hey its you! ive used ur open source modules before, very helpful 👺
Finally a great return to a geocentric model at 1:44 ! 😜 Copernicus please acknowledge your defeat!
Technically the Earth and sun orbit a point in space between them since the sun also moves (depending on where Jupiter and Saturn are). So geocentricity and heliocentricity are both wrong.
@@tschantz, I know. I was just making a joke about the fact, that for the sake of easier representation, a geocentric model has been used! Anyway, about the point you are making, is this gravitational centre ever outside the diameter of the sun? It's a genuine question.
@@undre-ah I was just going to say that, I'd be very surprised if the barycentre ever lay outside the diameter of the sun, which makes it a moot distinction when talking about heliocentricity.
He's a physicist, right? Changing reference frames is sort of second nature ;)
@@undre-ah From spaceplace.nasa.gov: “Our solar system's barycenter constantly changes position. Its position depends on where the planets are in their orbits. The solar system's barycenter can range from being near the center of the sun to being outside the surface of the sun. As the sun orbits this moving barycenter, it wobbles around.”
this video felt very nostalgic with the double bass and the talking pace, just like 10 years ago videos. i like it this way ❤️
It makes total sense in retrospect, but I had never considered that every solar eclipse HAS to have a new moon, and every lunar eclipse HAS to have a full moon.
Must, the word you are looking for is MUST
@@theonlylolkingpotato potato
"Her shadow falls upon the earth” sounds like a biblical passage 😂
Please, as if anyone whos stories ended up in a bible knew anything that was happening more than 10 feet above their heads.
It does and is actually a really beautiful and pleasant way of writing. It’s that old-timey manner of personifying objects and then using the feminine or masculine pronouns. The moon seems to have always been perceived as feminine (luna in Spanish.)
@@jefffinkbonner9551 except in Japan, where the Sun is the goddess Amaterasu and the Moon is her husband
@@Maegnas99 im 14 and this is deep
Maybe because early astronomers and most scientists who started the major fields of Academia were Christian.
i appreciate the detail that the earth’s shadow was red (an atmospheric effect) which illustrates why lunar eclipses become blood moons, especially when the whole near side of the moon is eclipsed!
That was amazingly clear
Yeah
I asked myself this EXACT same question after April 8th's eclipse. THANK YOU FOR SUCH A GREAT EXPLANATION DUDE!
I love how the childish depictions are so seamlessly and professionally animated, so much so that you don't even notice the transition. Very clever on the part of the animators.
Simple, clear, effective, I love it!
Jason Gibson did a video covering this a few days ago too. Since I was 6 years old I felt I was pretty astute with astronomy but both of you blew my mind this week.
i feel like i haven't seen a youtube video by you in a year or two. Thanks for educating - loved your channel back then, still love it. Thanks for everything.
Thank you for posting a new video! I greatly enjoy watching minutephysics-style content. This video finally explained to me the exact reason eclipses occur. Fantastic!
Kudos to the animation. One of your best.
I've missed short and sweet Minute Physics videos like this!
I love the way you explain things. I could also listen to you narrate all day.
This is beautiful work. Well done.
The dialog, the double bass, the deliberately cartoonish sketches, the animation. Nice video.
Or in modern day vernacular: this be low key da best no cap.
I did pose myself this very question following the recent eclipse, and had my reasoning confirmed by this, and fergusons explanations.
Amazing and intuitive animation at the end. Great work!
I've wondered this for ages! Thank you
The animation in this video was top notch! Great work!
Great explanation! Short and memorable, thanks to the simple and clear animation.
Excellent explanation and illustration
Thanks so much for uploading this really clear explanation
That was…incredibly helpful. Thank you!
Nice to hear from you after a while! Keep going bro 🤝🏻
Great video, thank you for this video!!!
Your way of explanation is outstanding 😊😊
Quality explanation. Much obliged.
A perfect explanation, thank you!
The moons orbit got a wonk and only 2 nodes, nodes and wonk need to align for an eclipse
#RespectTheWonk
#wonk4life
Interesting topic, short, to the point, cool drawings, and simple but clear explanation. This is minutephysics at its best
Thank you. My 9 year old asked this question a few weeks ago. I'm going to show him this video. So clearly and simply explained.
THANK YOU! This is such an easy to comprehend answer to what's puzzled me for ages :D
Very interesting curiosity I never searched for before. Thank you.
thanks for clearing this one up for me
I would love to see more of these. Before demonstrations were made with formula, it was all text and some even rhymed. From Pythagore to Pascal, there has to be some short and elegant demonstratioins like this. That was great !
That is so elegantly described. I love it. It borders on art.
I love minute physics. Thank you for the content.
Same
Great explanation! Thanks
It's not often minutephysics has to result to using 3D animations. So cool to see!
Resort*
Could you make a video explaining the Saros cycles too? They are related to the eclipses as well.
Also, the earth has a lot of water. Sometimes when there is an eclipse it is isolated to an ocean.
Simple and straightforward. I knew that was the reason, but here the visuals and clarity make a great explanation. Way better than my astronomy class at High school.
Oh ! So that's why ! Thank you for the explanation.
Amazing, short and damn informative. You got a sub
This question pursued me as a kid. Since I learned about the celestial bodies and eclipses I made the same question (at around 7 to 8 years old), but the teacher for some reason explained in way I didn't understand, probably something around "because of seasons". WTF
I kept in my mind but only after two years later asking another teacher about it, while trying to draw the moon and earth in the air with my hands, she just said "because they aren't aligned, they are spinning on different planes". It just clicked for me.
Thank you for this nice video
Well done! Thanks.
I have wondered about this since I was a kid. Thanks for clarifying!
Great video!! Makes me feel incredibly respectful and humble to know that someone 250 years ago can write such a accurate and detailed explanation for this. The that that human is able to propagate knowledge to the future generations truly sets us apart from other species on the planet doesn’t it? Amazing!
Going to see the April eclipse and was wondering about this, thanks!
I need like an entire documentary just filled with diagrams of the earth, sun, and moon to fully wrap my brain around the way they all move around. 😵💫
Great video. Good for world building.
still one of the best science channels
In short, space isn't a flat plane. Therefore, eclipses can only happen when the moon lines up with the sun and the earth such to create a straight line.
I thought of this question the very first day we were taught about eclipses 🤔
But when I asked my teacher, she said that my question was stupid but I never could understand what was wrong in my doubt
I revised the topic again and again but still couldn’t seem to understand why we don’t have eclipses every month
We were never taught about the tilted orbit of the moon
Soon, I completely forgot about my doubt and moved on
Now, I feel relieved to have finally found the answer after 8 years 🤚
Thanks a lot! ❤
So incredible that we live in a age where you can just watch a video and understand it instead of relying on some ignorant teacher.
and now you are reminded that teachers are not known for "knowing stuff" but rather for "teaching stuff"
What a teacher should do, is have a question box for all the questions the students ask that the teacher doesn't know at the time the question is asked, but will look into later.
This isn't a stupid question. This is an excellent question, since it promotes the need to think in all 3 dimensions, and understand a bigger picture of reality.
The trouble with teachers, is that in general, they aren't actually that smart I'm afraid.
This vid was 250 yrs in the making and delivered in under two and a half minutes, and so well at that.
Such a simple question. Such a beautiful answer.
Best eclipse explanation EVER
I needed this
My man Ferguson knew that we'd land on the moon someday and decided to account for it in his explanation. Smart man, he was.
The books gives really nice explanations being 250 years old
Interesting knowledge.
Both Veritasium and Minute Physics uploaded yipeee!
Short answer: because we live in a 3D world, not a 2D one.
I figured that was the answer but this is a great animation!
Finally I actually fully understood a *minutephysics* video! Praise be moonwellers 💯💫
Excelente explicación
always nice when your intuitions prove correct
Very Good. You should do a commercial series for Junior High School and High School science.
How he teaches a such topic in 2 mins , I will like i crash courses . Really loved the video .
Honey wake up, new minutephysics video dropped
I'm a math and science educator. Nicely done! Thanks. :)
My science teacher made fun of me for asking this very question back in 5th grade, a time before the internet.
Thank you
Nice to my intuition was basically right on this.
Those 1757 illustrations are awesome.
Thank you.
That's right! That's why seeing an eclipse is rare! 👍😀
Thank goodness for the Playback Speed feature on YT. My kids loved the video at 0.75x.
Can’t wait to find out
Yeah
That's great mannn
You forgot to mention the moon's orbit is also elliptical, so even eclipses aren't truly full if the moon is at it's apogee in orbit when one occurs.
That's how we get _annular_ eclipses!
@@fromnorway643 I know, that's why I mentioned it, because some people watching this might think the moon's orbit is circular.
@@fromnorway643 I'd like to see what an annular lunar eclipse would look like. The moon would have to be 4 times as far away as it currently is, for that to happen, and it also wouldn't be in a stable orbit since that's beyond the L2 point of the Earth and Sun, but I'd be curious to see what an antumbra would look like if it were influenced by an atmosphere.
@@carultch
Sorry, but that's incorrect!
The Moon's core shadow or umbra is on average slightly too short to reach the Earth, but it can do so when the Moon in its elliptical orbit is closer to the Earth than average, meaning that annular eclipses are slightly _more common_ than total ones. Here's an example seen from China in 2010:
cdn.mos.cms.futurecdn.net/zShRSRcqXsaeo3SLRGD4mh-650-80.jpg.webp
And here's one seen from Colombia in October last year:
images.gmanews.tv/webpics/2023/10/solar_eclipse_2023_10_15_16_16_11.JPG
Illustrated by me - love that!
Love this 🤗🤗
James Ferguson? Amazing. Great sense of humor and understanding of his limited understanding too.
I drove to the dead center of the Great American Solar Eclipse in Sylva, NC in 2017. One of the most amazing things I've ever seen. I highly recommend everyone go see one who has a chance to.
I still find it weird when people say her instead of it for inanimate objects.
English used to have gendered words just like French, German, etc does today. RobWords did a great video on it (Why doesn't English have genders? Well... it did!). There are still some holdovers, such as ships and (in this case) celestial bodies.
In ye olden days by default any inanimate object is a woman while any animate object is a man.
Ah, I dunno I just use it for celestial bodies and ships. I didn’t know that English used to do that way in the past. That’s interesting.
Come on, it´s the Moon! Show some respect! hehe.
@@theonlylolkingBut the moon moves across the sky and around the Earth. By this standard, wouldn't it be masculine?
An interesting question which I never considered. My first thought was that it simply didn't happen over land, but I see now that my hypothesis was wrong.
missed your content
I didn't know this!