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Originally posted by jfj123
reply to post by CanadianVandal
This is actually irrelevant as the last pole shift happened 800 million years ago and it took 20 million years to happen.
Recent work by scientists and geologists Adam Maloof of Princeton University and Galen Halverson of Paul Sabatier University in Toulouse, France, indicates that Earth indeed rebalanced itself around 800 million years ago during the Precambrian time period. They tested this idea by studying magnetic minerals in sedimentary rocks in a Norwegian archipelago. Using these minerals, Maloof and Halverson found that the north pole shifted more than 50 degrees — about the current distance between Alaska and the equator — in less than 20 million years. This reasoning is supported by a record of changes in sea level and ocean chemistry in the Norwegian sediments that could be explained by true polar wander, the team reports in the September–October 2006 issue of the Geological Society of America Bulletin.
Please visit the link provided for the complete story.
The video goes on to provide NO evidence of what it claims.
This is just one more video that is all bark, no bite. Completely unsubstantiated claims.
Based upon the study of lava flows of basalt throughout the world, it has been proposed that the Earth's magnetic field reverses at intervals, ranging from tens of thousands to many millions of years, with an average interval of approximately 250,000 years. The last such event, called the Brunhes-Matuyama reversal, is theorized to have occurred some 780,000 years ago.
The Earth's north magnetic pole is drifting away from North America so fast that it could end up in Siberia within 50 years, scientists have said.
Magnetic poles are known to migrate and, occasionally, swap places.
Previous studies have shown that the strength of the Earth's magnetic shield has decreased 10% over the past 150 years.
During the same period, the north magnetic pole wandered about 1,100km (685 miles) into the Arctic, according to the new analysis.
The rate of the magnetic pole's movement has increased in the last century compared with fairly steady movement in the previous four centuries, the Oregon researchers said.
The north magnetic pole was first discovered in 1831 and when it was revisited in 1904, explorers found it had moved by 50km (31 miles).
Brown dwarfs are sub-stellar objects with a mass below that necessary to maintain hydrogen-burning nuclear fusion reactions in their cores
Brown dwarfs are intermediate bodies between stars and giant planets (like Jupiter). The mass of brown dwarfs is usually less than 70 Jupiter masses. Because of their low mass, their central temperature is not high enough to maintain thermonuclear fusion reactions over a long time. In contrast to a star like our Sun, which spends most of its lifetime burning hydrogen hence keeping a constant internal temperature, a brown dwarf spends its lifetime getting colder and colder after having been formed.
One final point, unrelated to what I have said above. If this 'planetary body' was actually a brown dwarf star then it would be rather hard to spot considering that brown dwarf stars are actually stars that failed to ignite properly and therefore burn a lot cooler than our own sun and give off relatively little visible light.
What are brown dwarfs?
Brown dwarfs are gaseous objects with masses so low their cores never become hot enough to fuse hydrogen, the thermonuclear fuel stars like the Sun need to shine steadily. Instead, these gaseous objects fade and cool as they grow older. Brown dwarfs around the age of the Sun (5 billion years old) are very cool and dim, and therefore are difficult for telescopes to find. The brown dwarfs discovered in the Trapezium, however, are youngsters (1 million years old). So they're still hot and bright, and easier to see.
Originally posted by cruzion
reply to post by Kryties
Pole (axis around which the Earth rotates) shifts and magnetic pole shifts are two completely different things!
he argued that each shift took approximately five thousand years, followed by 20 to 30 thousand year periods with no polar movements.
Maloof and Halverson found that the north pole shifted more than 50 degrees — about the current distance between Alaska and the equator — in less than 20 million years
Earth indeed rebalanced itself around 800 million years ago during the Precambrian time period
Actually, all the evidence I have read suggests the complete opposite, except if the Brown Dwarf star is younger and therefore burning hotter - which is not the case in our system.
Brown dwarfs around the age of the Sun (5 billion years old) are very cool and dim, and therefore are difficult for telescopes to find.