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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.
σ Octantis (Latinised to Sigma Octantis) is the star's Bayer designation. As the southern hemisphere's pole star it bore the name Polaris Australis, first applied in the 1700s. [12] In 2016, the IAU organized a Working Group on Star Names (WGSN) [13] to catalog and standardize proper names for stars. The WGSN approved the name Polaris ...
Northern Hemisphere circumpolar stars around Polaris, with a long-exposure producing a star trail photo. 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 ...
The north celestial pole currently is within one degree of the bright star Polaris (named from the Latin stella polaris, meaning "pole star"). This makes Polaris, colloquially known as the "North Star", useful for navigation in the Northern Hemisphere: not only is it always above the north point of the horizon, but its altitude angle is always ...
The age of the oldest known stars approaches the age of the universe, about 13.8 billion years. Some of these are among the first stars from reionization (the stellar dawn), ending the Dark Ages about 370,000 years after the Big Bang. [1] This list include stars older than 12 billion years, or about 87% of the age of the universe.
While Sarah Gillis played “Rey’s Theme” from the Star Wars series while floating in the Crew Dragon cabin, various orchestras from around the globe accompanied her. ... Polaris Dawn flew ...
Representative lifetimes of stars as a function of their masses The change in size with time of a Sun-like star Artist's depiction of the life cycle of a Sun-like star, starting as a main-sequence star at lower left then expanding through the subgiant and giant phases, until its outer envelope is expelled to form a planetary nebula at upper right Chart of stellar evolution
The four members of the Polaris Dawn crew marvel at the Falcon 9 rocket that will soon take them into orbit aboard a SpaceX Dragon. The objectives for the crew's five-day stay aboard a SpaceX Crew ...
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