If the earth is about 4.6 billion years old, how many precision cycles have occured?

Question

i need this question answered, but also please explain to me what a precision cycle is, i have tried to read about it but cannot understand how to find out how many cycles the earth has had!!! please help me understand

Answer 1

<morning guy is right on.  Except I'd add a couple of things--

precession , simply put, is exactly the same thing you see when you spin a top and before it falls over, it start to wobble...the wobble is precession.

also morning guy came up with a big number (19,000 or so?), and that's as good a number as any...with the detail that the period of one precession may or may not have been what it is nowadays...

Answer 2

I don't know what a "precision cycle" might be.

A PRECESSION cycle is one cycle of the (north/south) pole in the sky.  It takes about 19,000 to 25,800 years; the number is not exact because in varies from one cycle to the next.  The first link below has an explanation of what it is.  The second link shows how irregular it is.

So ... there have been about 210,200 cycles, plus or minus 32,000, in the past 4.6 billion years.  At the beginning of that time, the moon hit the Earth, and things were a bit crazy for a few million years.