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“Manifest” has been named Cambridge Dictionary’s word of the year for 2024, after celebrities such as pop star Dua Lipa and gymnast Simone Biles spoke of manifesting their success.
Vice President Kamala Harris was slammed by the Trump campaign and social-media users Monday over serving up her latest word salad on constellations.
A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.
In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...
Ad astra is a Latin phrase meaning "to the stars". The phrase has origins with Virgil , who wrote in his Aeneid : " sic itur ad astra " ('thus one journeys to the stars') [ 1 ] and " opta ardua pennis astra sequi " ('desire to pursue the high[/hard to reach] stars on wings'). [ 2 ]
Giant stars have a much lower surface gravity than do main sequence stars, while the opposite is the case for degenerate, compact stars such as white dwarfs. The surface gravity can influence the appearance of a star's spectrum, with higher gravity causing a broadening of the absorption lines .
Stars may have multiple proper names, as many different cultures named them independently. Polaris , for example, has also been known by the names Alruccabah , Angel Stern, Cynosura , the Lodestar , Mismar , Navigatoria , Phoenice , the Pole Star , the Star of Arcady , Tramontana and Yilduz at various times and places by different cultures in ...
Below there are lists the nearest stars separated by spectral type. The scope of the list is still restricted to the main sequence spectral types: M, K, F, G, A, B and O. It may be later expanded to other types, such as S, D or C. The Alpha Centauri star system is the closest star system to the Sun.