Why Solar Eclipses Don’t Happen Every Month - Orbit Animation Explains

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The wobble of the moon’s orbit is the reason why solar eclipses do not happen in regular intervals. The moon’s shadow is cast above earth or below at different times in its orbit of Earth.

Credit: NASA Goddard Space Flight Center

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Took me 40 years but I finally understand. Thanks to the makers of this video.

Munrubenmuz

Short, simple, fast and understandable. No time wasting and annoying loud music. Loved it 10/10.

adriantcullysover

Next search: "why does it wobble?" 😂

kwiechufithu

It does not wobble but the tilt of 5° is fixed.Only the thing is the plane as a whole precesses & along with that the nodes precesses west ward.

sanjayyashwantsohani

it doesnt wobble. thats a bad explanation, its just tilted at 5. something degrees. play the motion forward and backwards in your heads and you see that at some point in some years they align but most of the time they dont.

Konstantinos

This the video what i looking for, after 20 years. Thank you so much....

yundikanofrisandi

Well explained. Cleared my conception thanks

aswinimajumder

good visualisation: please Nasa go the extra mile and add how often it happens, how many degrees is the tilt etc.

massimosabbatini

The orbit doesn't wobble, but it's the movement of the earth around the sun that causes this shift of the moon's shadow. Let's take the first moment. The moon is in front of the sun, but it's too high from our perspective for an eclipse. We will call that point in space point A. After some days the moon will be on the left side of the earth. Let's call that ponit B. Now after some months point B is going to be in front of the Sun, causing an eclipse.

armadillo

thanks to this i finally understood the position of the moon related to the sun and earth and eclipses and phases. thanks!

leo_maino

I had this question for a billion years so thanks

hwe

wow!! great video ...thanks for the infomation too:))

skytv

The orbit of the Moon is inclined 5.14° to the plane of orbit of earth.
But why does the orbit of Moon goes up and down of earth?

ragavendiranr

At 0:14 your moon shadow is parallel to the orbital plane of the Earth. It shouldn't be, it never is. It only does that when the sun, moon and earth are coplanar. The shadow is always projected along the axis between the center of the light source (sun) and the center of the object (moon); so the shadow should go upwards at that point. In doing that, the bottom part of the moon remains lit when viewed from Earth, so you no longer have a new moon, or moon completely within its own shadow to the observer from Earth.

jonelsorel