There is one major issue regarding the history of the earth "tipping over" that hasn't been adequately or scientifically addressed: there is a 20,000 year sun spot cycle that dramatically affects the earth's magnetic field and the core plasma that contributes to the final change in the earth's "tipping over". This sun spot cycle is more significant that previously considered and is the smoking gun in this particular scenario. If there is a 20,000 year sun spot cycle and it does have an effect to the degree that the earth "tips" there must be evidence. However, just like the dinosaur killing comet, if you don't even have a theory then you miss the evidence in front of you such as the k boundry data that was in front of the community for years until recognized.

I stated that there is a 20,000 year sun spot cycle, since it hasn't been documented then my statement is a theory but I have it on good authority and would welcome comments on the sun spot cycle.

thanks

Kerry

I thought the sun spot cycle was eleven years

What you may be thinking of is precession, where it takes 25000 years for one precession

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Hi Kerry, welcome to the BAUT forum. I suspect you might not be using the word 'theory' in the scientific sense. I am curious to know what your good authority on this undocumented feature of the Sun is.

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Not really a theory, more like a comment. I doubt that 20,000 years ago, many people would have been documenting sunspots.

Who and what information does this authority have that we can look at?

Edit -- looks like the mods beat me to it.

Sounds like this is going to be ATM material.

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With my limited understanding of this subject i don't see how polarity reversals would have any such effect. The polarity is apparently set by the flows of our heavy nickel/iron core and it has apparently shifted multiple times - known as "Geomagnetic reversal".

I only studied this relatively lightly when doing ground school and navigation for flying and correcting for magnetic declination when navigating by compass (among other factors)

That was my guess, but until he comes out with something more concrete, let's extend the benefit of the doubt.

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Even if there is a 20,000 year sun spot cycle, how does that affect the Earth's magnetic field, and how does any of that tip the Earth over?

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I would think that throughout history, people looked at the sun and saw spots and documented (or passed down) the knowledge to say "don't look at sun - you'll see spots".

I'll wait for Kerry's responses before I pass judgement. Although I do have a feeling of the outcome.

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II have plenty of doubt. There is a wing-ding idea in current vogue amongst the readers of the sensationalist press that the Earth can be tipped on its axis easily.

Folks, it hasn't happened, and it's not going to happen. The last time there were significant changes was circa 4.5 billion years ago, when something the size of Mars whacked into proto-Earth, left its nickel-iron core behind and its outer layers as the Moon. Its takes something that massive with plenty of momentum to change the axis; the local magnetic field won't do it.

Please, please, do not buy into nonsense ideas. Be skeptical. Learn a little physics, do a little research, ask "How?"

Clue: look up gyroscopes, momentum, and angular momentum, then calculate how much energy is needed to tilt the Earth.

Regards, John M.

Right , John

I should think that it took an emourmous collision with a Mars- sized planet
to knock Earth off it's axis the last time. Nothing less.

Dan

And if the OP is talking about reversals of the Earth's magnetic field (instead of a pole flip), the geologic record contains evidence of when the reversals happened.

And it does not happen on a 20,000 year interval. Much, much less frequently than that, on average.

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Right. He is clearly wrong in what he is talking about, but we haven't discerned between ATM, and simply misinformed. I was curious to see more about the 'source' of his 'theory'. Only if we know that can we really address what he's talking about.

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Welcome to BAUT Forum.

Please define Earth's "tipping over".

Is it the reversal or movement of spin axis for the entire mass of Earth as a solid object?
Is it the reversal or movement of spin axis for the crust of the Earth, leaving most of the mass unaffected?
Is it the reversal or movement of Earth's magentic dipole?

What is the before and after state of the Earth, mass and energy, around a tipping-over event? What happens during one? What is the duration?

Thanks.

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Right. It is not established that the Earth's magnetic field can affect the orientation of its axis. I have read somewhere that we are lucky to have a large moon, as it keeps the Earth's axis from slowly tipping all the way over, which would be pretty devastating to life on Earth. (Imagine the axis at 90^o from vertical instead of the current 23^o...)

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Huh? You mean like a top falling over on the floor? What force is "tipping" it?

eta: I'm still unclear if the OP was talking about the axis or the magnetic poles.

Maybe he just discovered....uhh...let's say Dr. I. V.

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(By the way, I hate it that so many papers in the areas of planetary science and geology are not easily avaiable to the dreaded "non-subscribers". It is like they are screaming at me: "YOU CAN'T HANDLE THE TRUTH". Good, I feel better now.)

I know you are a person who takes his physics seriously, but isn't it said that most great discoveries aren't discovered with "Eureka!" but with, "Hmmm, that's funny." Big Don

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