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This pressure ridge at the North Pole is about 1 km (0.62 mi.) long, formed between two ice floes of multi-year ice. The North Pole, also known as the Geographic North Pole, Terrestrial North Pole or 90th Parallel North, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface.
The Rupes Nigra ("Black Rock"), a phantom island, was believed to be a black rock located at the Magnetic North Pole or at the geographic North Pole itself. Described by Gerardus Mercator as 33 French miles in size, it provided a supposed explanation for why all compasses point to this location. The idea came from a lost work titled Inventio ...
The geomagnetic north pole is the northern antipodal pole of an ideal dipole model of the Earth's magnetic field, which is the most closely fitting model of Earth's actual magnetic field. The north magnetic pole moves over time according to magnetic changes and flux lobe elongation [2] in the Earth's outer core. [3]
August 3, 1958. First to reach North Pole by surface travel (on Ski-Doo): Ralph Plaisted. April 19, 1968. First to reach the North Pole by dogsled: team led by Sir Wally Herbert. 1968-69. First surface ship to reach North Pole: nuclear-powered icebreaker Arktika (Soviet Union). August 17, 1977.
The Noose of Laurels. Sir Walter William Herbert (24 October 1934 – 12 June 2007) was a British polar explorer, writer and artist. In 1969 he became the first man fully recognized for walking to the North Pole, on the 60th anniversary of Robert Peary 's disputed expedition. [1] He was described by Sir Ranulph Fiennes as "the greatest polar ...
True north (also called geodetic north or geographic north) is the direction along Earth 's surface towards the place where the imaginary rotational axis of the Earth intersects the surface of the Earth. That place is called the True North Pole. True south is the direction opposite to the true north. North per se is one of the cardinal ...
Polaris is the brightest star in the constellation of Ursa Minor (upper right). Big Dipper and Ursa Minor in relation to Polaris. A view of Polaris in a small telescope. Polaris B is separated by 18 arc seconds from the primary star, Polaris A. A 4-day time lapse of Polaris illustrating its Cepheid type variability.
The pole of Vega—its axis of rotation—is inclined no more than five degrees from the line-of-sight to the Earth. At the high end of estimates for the rotation velocity for Vega is 236.2 ± 3.7 km/s [ 60 ] along the equator, much higher than the observed (i.e. projected ) rotational velocity because Vega is seen almost pole-on.