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The Pole Star Will Change...

, It does every few thousand years

 
> The Pole Star Will Change..., It does every few thousand years
Mandrake
post Jan 13 2007, 02:14 PM
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The Pole Star once was Thuban (3000 B.C.), the third star from the end of the tail in Draco.

In a little more than 5,000 years from now, Alderamin, the brightest star in the constellation Cepheus, will be almost the Pole Star.

About 7,000 years from now, Deneb, the brightest star in Cygnus, will be the pretender for the Pole Star for a while.

In about 12,000 years from now, Vega, the brightest star in Lyra, will be the Pole Star. Vega will be a brilliant Pole Star some six times brighter than Polaris.

There are long periods when there is no Pole Star at all.

At the present time there is no Pole Star in the southern sky.



Self - belief is the most potent force.
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visuja
post Jan 21 2007, 06:08 AM
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QUOTE(Mandrake @ Jan 16 2007, 05:12 PM) *
....much like the tip of a rotating top that is about to stop spinning.
So the top's about to stop spinning ? ohmy.gif What would be the consequences ? (apart from perpetual day and night on either halves) Can it theoretically reach a point that it stops spinning and yet everything else remains the same (gravity, seasons, ocean currents, wind currents, El Nino!, etc) ? What causes the wobble ? unsure.gif What are the effects of the wobble ? .so many questions... Did someone say they harboured many fallacies ? biggrin.gif

Waiting for one hour of Mandrake time to pass to see the sketches ! biggrin.gif ...Kidding smile.gif


jinhein ataa kii hai tu ne taaqat, unhein hidaayat kii roshnii de
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Mandrake
post Jan 21 2007, 08:23 AM
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Vivek, the formats I am working in are not converting satisfactorily to jpg. Hence the delay...

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