Greenland study link
The star Polaris is huge,it has big stars orbiting it.
α UMi Aa is a 4.5 solar mass (M☉) F7 yellow supergiant (Ib). This is the first classical Cepheid to have a dynamical mass determined
from its orbit. The two smaller companions are α UMi B, a 1.39 M☉ F3 main-sequence star orbiting at a distance of 2400 AU, and α UMi
Ab (or P), a very close F6 main- sequence star with an 18.8 AU radius orbit and 1.26 M☉. There are also two distant components: α
UMi C and α UMi D which have been shown not to be physically associated with the three other stars.[11][12]

Polaris B can be seen even with a modest telescope. William Herschel discovered the star in 1780 while using a hand-built reflecting
telescope, one of the most powerful telescopes at the time. In 1929, it was discovered, by examining the spectrum of Polaris A, that it
was a very close binary with the secondary being a dwarf (variously α UMi P, α UMi an or α UMi Ab), which had been theorized in earlier
observations (Moore, J.H and Kholodovsky, E. A.). In January 2006, NASA released images, from the Hubble telescope, that showed
the three members of the Polaris ternary system. The nearest dwarf star is in an orbit of only 18.5 AU (2.8 billion km from Polaris A,[13]
about the distance between our Sun and Uranus), which explains why its light is swamped by its close and much brighter companion.[7]



Thuban has a spectral class of A0III, indicating its similarity to Vega in temperature and spectrum, but more luminous and more
massive. Thuban is not a main sequence star; it has now ceased hydrogen fusion in its core and is fusing helium.[citation needed] That
makes it a white giant star, being 250 times more luminous than our Sun but over 300 light-years distant.

Due to the precession of Earth's rotational axis, Thuban was the naked-eye star closest to the north pole from 3942 BC, when it moved
farther north than Theta Boötis, until 1793 BC, when it was superseded by Kappa Draconis. It was closest to the pole in 2830 BC, when
it was less than ten arc-minutes away from the pole.

The 4.2 kiloyear BP aridification event was one of the most severe climatic events of the Holocene period in terms of impact on cultural
upheaval.    Starting in about 2200 BC, it probably lasted the entire 22nd century BC. It is very likely to have caused the collapse of the
Old Kingdom in Egypt as well as the Akkadian Empire in Mesopotamia.   The drought may have also initiated southeastward habitat
tracking within the Indus Valley Civilization.


The aridification of Mesopotamia may have been related to the onset of cooler sea surface temperatures in the North Atlantic (Bond
event 3), as analysis of the modern instrumental record shows that large (50%) interannual reductions in Mesopotamian water supply
result when subpolar northwest Atlantic sea surface temperatures are anomalously cool.[17] The headwaters of the Tigris and
Euphrates Rivers are fed by elevation-induced capture of winter Mediterranean rainfall.

The Akkadian Empire—which in 2300 BC was the second civilization to subsume independent societies into a single state (the first
being ancient Egypt at around 3100 BC) —was brought low by a wide-ranging, centuries-long drought.[18] Archaeological evidence
documents widespread abandonment of the agricultural plains of northern Mesopotamia and dramatic influxes of refugees into
southern Mesopotamia around 2170 BC.[19] A 180-km-long wall, the "Repeller of the Amorites," was built across central Mesopotamia
to stem nomadic incursions to the south. Around 2150 BC, the Gutian people, who originally inhabited the Zagros Mountains, defeated
the demoralized Akkadian army, took Akkad, and destroyed it around 2115 BC. Widespread agricultural change in the Near East is
visible at the end of the third millennium BC.[20]

Resettlement of the northern plains by smaller sedentary populations occurred near 1900 BC, three centuries after the collapse.

Today across Syria a Draught and the main cause of the fighting.

Vega was the northern pole star around 12,000 BCE

16,000 - 13,000 BC Oldest Dryas cold, begins slowly and ends sharply (B-S)
12,700 BC Antarctic Cold Reversal warmer Antarctic, sea levels rise
12,400 BC Bølling oscillation warm and wet in the North Atlantic, begins the Bølling-Allerød period (B-S)
12,400 - 11,500 BC (much discussed) Older Dryas cold, interrupts warm period for some centuries (B-S)
12,000 - 11,000 BC Allerød oscillation warm & moist (B-S)
11,400 - 9,500 BC Huelmo/Mascardi Cold Reversal cold in Southern Hemisphere
11,000-8,000 BC Late Glacial Maximum, or Tardiglacial (definitions vary)
10,800 - 9,500 BC Younger Dryas sudden cold and dry period in Northern Hemisphere (B-S)
Study published Friday, April 8, 2016, in the journal Science Advances.

Melting ice sheets — especially in Greenland — are changing the distribution of weight on Earth. And that has caused both the North Pole and the
wobble, which is called polar motion, to change course, according to a study published Friday in the journal Science Advances.

Scientists and navigators have been accurately measuring the true pole and polar motion since 1899 and for almost the entire 20th century they
migrated a bit toward Canada. But that has changed with this century and now it's moving toward England, said study lead author Surendra Adhikari at
NASA's Jet Propulsion Lab.
Since 2003, Greenland has lost on average more than 600 trillion pounds of ice a year and that affects the way the Earth wobbles in a manner similar to
a figure skater lifting one leg while spinning, said NASA scientist Eirk Ivins, the study's co-author.

Ivins said he likes to think of it as a billion trucks each year dumping ice out of Greenland. On top of that, West Antarctica loses 275 trillion pounds of ice
and East Antarctica gains about 165 trillion pounds of ice yearly, helping tilt the wobble further, Ivins said.
There has been five major Ice Ages starting 2400,000,000 years ago, as a result the earth has
flattened at the poles. This deformation is caused by the weight of billions of tons of water/ice at
the poles. Today the weight has shifted from pole to the equator because of local mass the
biggest being the sun and moon.  The tide is a bulge that fallows the sun and moon on the
ecliptic, the moon rises 5 degrees above and below the tropics, so 28 degrees above and below
the equator. When the ocean rises this bulge takes most of the water. In fact the moon is speeding
up because of this massive bulge.  The moon is the second fastest object in the solar system, one
orbit is just short of one rotation of the earth this causes the bulge to proceeds the moon pulling
the moon faster. My point is the weight of water has flattened the earth at the poles and is now
mostly in the tropics.  The earth will start a deformation back into a circle, today we are seeing
islands disappearing in the tropics and a fractional growth above or below. When this weight
causes an earth quake along an induction fault water will be permanently displaced.
Did a Comet Hit Earth 12,000 Years Ago?
Nanodiamonds found across North America suggest that major climate change could have been cosmically instigated
By David Biello on January 2, 2009
Credit: Courtesy of Doug Kennett
Roughly 12,900 years ago, massive global cooling kicked in abruptly, along with the end of the line for some 35 different mammal species,
including the mammoth, as well as the so-called Clovis culture of prehistoric North Americans. Various theories have been proposed for the die-
off, ranging from abrupt climate change to overhunting once humans were let loose on the wilds of North America. But now nanodiamonds found
in the sediments from this time period point to an alternative: a massive explosion or explosions by a fragmentary comet, similar to but even
larger than the Tunguska event of 1908 in Siberia.

Sediments from six sites across North America—Murray Springs, Ariz.; Bull Creek, Okla.; Gainey, Mich.; Topper, S.C.; Lake Hind, Manitoba; and
Chobot, Alberta—yielded such teensy diamonds, which only occur in sediment exposed to extreme temperatures and pressures, such as those
from an explosion or impact, according to new research published today in Science.

The discovery lends support to a theory first advanced last year in that some type of cosmic impact or impacts—a fragmented comet bursting in
the atmosphere or raining down on the oceans—set off the more than 1,300-year cooling period in the Northern Hemisphere known as the
Younger Dryas for the abundance of an alpine flower's pollen found during the interval.

The cooling period interrupted an extended warming out of an ice age predicted by slight changes in Earth's orbit (known as Milankovitch cycles)
that continues today. And it remains an unexplained anomaly in the climate record.

But a series of cometary fragments exploding over North America might explain a layer of soil immediately prior to the cooling containing
unusually high levels of iridium—an element more common in cosmic wanderers like meteoroids than in Earth's crust. Paired with the fact that
this layer occurs directly before the extinction of at least 35 genera of large mammals, including mammoths, it is strong circumstantial evidence
for a cosmic event.

"Very strong impact indicators are found in the sediments directly above, and often shrouding in the case of Murray Springs, the remains of
these animals and the people who were hunting them," says archaeologist and study co-author Doug Kennett of the University of Oregon in
Eugene, the son in the father–son team helping to advance the new impact theory. "Is it a comet? Is it a carbonaceous chondrite? Was it
fragmented? Was it focused? Based on the distribution of the diamonds, it was certainly large scale."

Preliminary searches further afield—Europe, Asia and South America—have turned up similar minerals and elements in sediments of the same
age, Kennett says, and his own work on California's Channel Islands tells a tale of a massive burn-off, followed by erosion and a total change in
the flora of the region.

"It's consistent with a fragmentary body breaking up with air shocks and possible surface impacts in various parts of North America. It could be
above the ice sheet or offshore in the ocean," he says, explaining why no impact crater(s) has been found to date. "Immediate effects on the
ground include high temperatures and pressures triggering major transformations of the vegetation, knocking trees over but also burning."

And that would make the climate shift of the Younger Dryas a closer cousin to the massive asteroid impact that wiped out the dinosaurs 65
million years ago. "This is an event that happened on one day," Kennett notes. "We're going to need high-resolution climate records,
archaeological records, paleontological records to try to explore the effects."
An alternative view is that the
magnetosphere 12,900 was in the
same condition that created the
Tunguska event the stas in the
southern and northern precession at
12,900 years ago.
MYSTERY SPIKE IN EARTH'S
MAGNETIC FIELD 3,000 YEARS AGO
LEAVES SCIENTISTS BAFFLED
4/11/2018
link
MYSTERY SPIKE IN EARTH'S
MAGNETIC FIELD 3,000 YEARS AGO
LEAVES SCIENTISTS BAFFLED
4/11/2018
I was studying something completely deferent when I came across a relationship with the Greenland Ice Co2.
measurements and stars along earth's changing northern and southern poles. This changing position is due to the Axial
precession, historically called the precession of the equinoxes.  Our planetary magnetosphere is generated by a nickel or
metallic core, whose motion form a magnetic field same as stars plasma motion forms a magnetosphere's.
We know there have been
about 170 magnetic pole
reversals during the last
100 million years, and that
the last major reversal was
781,000 years ago.