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Sigma Octantis is a solitary [9] star in the Octans constellation that forms the pole star of the Southern Hemisphere. Its name is also written as σ Octantis , abbreviated as Sigma Oct or σ Oct , and it is officially named Polaris Australis ( / p oʊ ˈ l ɛər ɪ s ɔː ˈ s t r eɪ l ɪ s / ). [ 10 ]
The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is the point in the Southern Hemisphere where the Earth's axis of rotation meets its surface. It is called the True South Pole to distinguish from the Magnetic South Pole .
The location of the celestial poles of some selected Solar System objects is shown in the following table. [1] The coordinates are given relative to Earth's celestial equator and the vernal equinox as they existed at J2000 (2000 January 1 12:00:00 TT ) which is a plane fixed in inertial space now called the International Celestial Reference ...
Samuel Shenton was a sign writer, who lived with his wife Lillian in a ginger-brick terrace in suburban Dover. He was the son of an army sergeant major, born in Great Yarmouth, and by the 1920s claimed to have invented an airship that would rise into the atmosphere and remain stationary until the Earth spun westwards at 1,000 km/h (620 mph) to the desired destination at the same latitude.
This would have invalidated Reed's premise that the poles cannot be reached. Although Peary's claim was, in its day, and continues to be controversial, on December 14, 1911, Roald Amundsen undisputedly reached the South Pole. Subsequent expeditions to and flights over the south pole have conclusively demonstrated that there are no large holes ...
Our compasses are just pointing to one pole at a time because there’s a dominant two-pole system. But sometimes, Earth doesn’t always just have a single magnetic North and South Pole.
BQ Octantis is a fainter, magnitude 6.82 star located much closer to the South Pole (at less than a degree) than Sigma. In addition to having the current southern pole star of Earth, Octans also contains the southern pole star of the planet Saturn , which is the magnitude 4.3 Delta Octantis .
The brightest star in the night sky is located in the southern celestial hemisphere and is larger than the Sun. Sirius in the constellation of Canis Major has the brightest apparent magnitude of −1.46; it has a radius twice that of the Sun and is 8.6 light-years away.