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A pole star is a visible star that is approximately aligned with the axis of rotation of an astronomical body; that is, a star whose apparent position is close to one of the celestial poles. On Earth, a pole star would lie directly overhead when viewed from the North or the South Pole.
Polaris Aa is an evolved yellow supergiant of spectral type F7Ib with 5.4 solar masses ( M☉ ). It is the first classical Cepheid to have a mass determined from its orbit. The two smaller companions are Polaris B, a 1.39 M☉ F3 main-sequence star orbiting at a distance of 2,400 astronomical units (AU), [17] and Polaris Ab (or P), a very close ...
Polestar is a brand of electric vehicles with pure, progressive, and performance design. Learn more about Polestar 3, Polestar 2, and Polestar 4, and subscribe to get the latest news.
Polestar Automotive Holding UK PLC is a Swedish automotive manufacturer that produces electric vehicles. Owned by Volvo Cars, the company is headquartered in Torslanda outside Gothenburg, Sweden. [5] .
Polestar is the brightest star near the celestial pole, which changes over time due to the precession of the equinoxes. Learn about the history of polestars, the current polestar Polaris, and the constellation Ursa Major.
- The Editors of Encyclopaedia Britannica
Sep 25, 2020 · Learn how Polaris, the current pole star, will change over time due to the precession of the Earth's axis. Discover the history and features of other pole stars and the southern pole star Sigma Octantis.
Polestar is an electric performance car brand that offers Polestar 3, Polestar 2 and Polestar 4 models. Learn more about their features, prices, offers and locations.
