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The Paris Observatory predates by a few years the Royal Greenwich Observatory in England, which was founded in 1675. The English philosopher John Locke visited the Paris Observatory on 28 August 1677, which he recorded in his journal: "At the Observatory we saw the Moon in a twenty-two foot glass, and Jupiter, with his satellites, in the same ...
Astronomy Centre: 1982 Todmorden, England Astronomy Tower of the Sorbonne: 1885–1909 (only for amateur use since 1980) Paris, France Astrophysical Institute Potsdam: 1992 Potsdam, Germany Atacama Pathfinder Experiment (APEX) 2003 Llano de Chajnantor Observatory, Chile Australia Telescope Compact Array: 1988 Narrabri, Australia
The length of polar night varies by latitude from 24 hours just inside the polar circles to 179 days at the poles. As there are various kinds of twilight, there also exist various kinds of polar twilight that progress towards true polar night. Each kind of polar night is defined as when it is darker than the corresponding kind of twilight.
Midnight sun at the North Cape on the island of Magerøya in Norway. Midnight sun, also known as polar day, is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the Sun remains visible at the local midnight.
The Institut d'Astrophysique de Paris (translated: Paris Institute of Astrophysics) is a research institute in Paris, France. The Institute is part of the Sorbonne University and is associated with the CNRS Centre national de la recherche scientifique .
Sigma Octantis is the closest near naked-eye star to the south celestial pole, but at apparent magnitude 5.47 it is barely visible on a clear night, making it less useful for casual navigational or astronomy alignment purposes. [14] [15] It is a yellow giant 294 light years from Earth. Its angular separation from the pole is about 1° (as of 2000).
Stargazing Live is a British live television programme on astronomy that was broadcast yearly on BBC Two over three nights every winter from 2011 to 2017. The series was primarily presented by scientist Brian Cox and comedian and amateur astronomer Dara Ó Briain with support from TV presenter and biochemist Liz Bonnin and astronomer Mark Thompson.
With an apparent magnitude that fluctuates around 1.98, [3] it is the brightest star in the constellation and is readily visible to the naked eye at night. [15] The position of the star lies less than 1° away from the north celestial pole , making it the current northern pole star .