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Tracking a Jurassic reversal of the Earth's magnetic field

Roughly 180 million years ago, during the height of the Jurassic period, the Earth's magnetic field flipped, bringing the magnetic north pole once again into the Northern Hemisphere.

Space & Earth / Earth Sciences

created May 17, 2012 | popularity 4.5 / 5 (2) | comments 0

Tampa airport runways renumbered due to magnetic north movement

(PhysOrg.com) -- The magnetic north pole is slowly moving, and the shift is affecting runways at airports in Tampa, Florida, with the major runway at Tampa International Airport closed until January 13th to ...

Space & Earth / Earth Sciences

created Jan 10, 2011 | popularity 4.1 / 5 (14) | comments 13 | with audio podcast report

Saturn's Mysterious Hexagon Emerges from Winter Darkness

(PhysOrg.com) -- After waiting years for the sun to illuminate Saturn's north pole again, cameras aboard NASA's Cassini spacecraft have captured the most detailed images yet of the intriguing hexagon shape ...

Space & Earth / Space Exploration

created Dec 09, 2009 | popularity 5 / 5 (23) | comments 21

Dinosaur forests mapped

The first detailed maps of the Earth's forests at the time of the dinosaurs have been drawn up. The patterns of vegetation, together with information about the rate of tree growth, support the idea that the ...

Space & Earth / Earth Sciences

created Feb 28, 2012 | popularity 4.6 / 5 (5) | comments 7 | with audio podcast

How Arctic microbes respond to a warming world

From the North Pole to the Arctic Ocean, the frozen soils within this region keep an estimated 1,672 billion metric tons of carbon out of the Earth's atmosphere. This sequestered carbon is more than 250 times ...

Biology / Cell & Microbiology

created Nov 06, 2011 | popularity 4.8 / 5 (6) | comments 1 | with audio podcast

Northern Lights hit 100-year low point: Finnish researchers

The Northern Lights have petered out during the second half of this decade, becoming rarer than at any other time in more than a century, the Finnish Meteorological Institute said Tuesday.

Space & Earth / Earth Sciences

created Sep 28, 2010 | popularity 5 / 5 (5) | comments 1

Giant Swedish space balloon fizzes out: space center

Swedish scientists were forced to halt a ground-breaking project Thursday to test the impact of stars when a balloon carrying an X-ray telescope began leaking helium, a space centre said Thursday.

Space & Earth / Space Exploration

created Jul 07, 2011 | popularity 4 / 5 (1) | comments 0

Europe hammered by winter, is North America next?

For the first half of this year's winter, the big news was warm temperatures and lack of snow. Ski resorts were covered in bare dirt, while January temperatures in southern California topped July highs.

Space & Earth / Earth Sciences

created Feb 17, 2012 | popularity 4 / 5 (4) | comments 14

North Pole wolf emails locations to researchers

In July the scientists, one from the United States, the other from Canada, put the satellite collar on Brutus, the leader of his wolf pack, on remote Ellesmere Island, only 600 miles from the North Pole. Their ...

Biology / Plants & Animals

created Dec 01, 2009 | popularity 4.8 / 5 (4) | comments 0

Fluid clue to Saturn's hexagon (w/ Video)

(PhysOrg.com) -- An unusual hexagonal structure found in Saturn's atmosphere has been recreated in an Oxford laboratory.

Space & Earth / Space Exploration

created Apr 16, 2010 | popularity 4.9 / 5 (15) | comments 0 | with audio podcast

Radar Map of Buried Martian Ice Adds to Climate Record

(PhysOrg.com) -- Extensive radar mapping of the middle-latitude region of northern Mars shows that thick masses of buried ice are quite common beneath protective coverings of rubble.

Space & Earth / Space Exploration

created Mar 02, 2010 | popularity 5 / 5 (11) | comments 3 | with audio podcast

STAR TRAK for February 2012

As evening twilight fades during February, the two brightest planets, Venus and Jupiter, will highlight the sky as they come into view in the southwest.

Space & Earth / Space Exploration

created Feb 02, 2012 | popularity 5 / 5 (1) | comments 0

Low temperatures enhance ozone degradation above the Arctic

Extraordinarily cold temperatures in the winter of 2010/2011 caused the most massive destruction of the ozone layer above the Arctic so far: The mechanisms leading to the first ozone hole above the North Pole ...

Space & Earth / Earth Sciences

created Jan 19, 2012 | popularity 5 / 5 (2) | comments 1

Report: Images from Mars lander show liquid water

(AP) -- Did NASA's Phoenix Mars lander find evidence of liquid water before it froze to death?

Space & Earth / Space Exploration

created Mar 11, 2009 | popularity 3.3 / 5 (9) | comments 2

Da Vinci sketch recreated on melting Arctic ice

An artist has recreated Leonardo da Vinci's most famous sketch "Vitruvian Man" in the Arctic ice to draw attention to the ice melt, Greenpeace said Wednesday.

Space & Earth / Environment

created Sep 07, 2011 | popularity 5 / 5 (1) | comments 3

North Pole

Coordinates: 90°N 0°W / 90°N 0°W / 90; -0

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is, subject to the caveats explained below, defined as the point in the northern hemisphere where the Earth's axis of rotation meets the Earth's surface. It should not be confused with the North Magnetic Pole.

The North Pole is the northernmost point on Earth, lying diametrically opposite the South Pole. It defines geodetic latitude 90° North, as well as the direction of True North. At the North Pole all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value.

While the South Pole lies on a continental land mass, the North Pole is located in the middle of the Arctic Ocean amidst waters that are almost permanently covered with constantly shifting sea ice. This makes it impractical to construct a permanent station at the North Pole (unlike the South Pole). However, the Soviet Union, and later Russia, have constructed a number of manned drifting stations, some of which have passed over or very close to the Pole. Recently, scientists have predicted that the North Pole may become seasonally ice-free by 2065 due to Arctic shrinkage. More pessimistically, it was claimed by some scientists that the Arctic ice-cap might temporarily disappear in mid 2008, a prediction which did not come to pass. On December 15, 2008, the Canadian science TV series Daily Planet reported that scientists now predict the ice cap could melt away by 2014.

The sea depth at the North Pole has been measured at 4,261 metres (13,980 ft). The nearest land is usually said to be Kaffeklubben Island, off the northern coast of Greenland about 700 km (440 mi) away, though some perhaps non-permanent gravel banks lie slightly further north.

For more information about North Pole, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.

Related topics: climate change , arctic