17 relations: Astronomy (magazine), Astronomy Picture of the Day, Blueshift, Caldwell catalogue, Cambridge University Press, Cassiopeia (constellation), Circumpolar star, Light-year, NGC 869, NGC 884, Open cluster, Perseids, Perseus (constellation), Pleiades, Radiant (meteor shower), Stellar classification, William Herschel.
Astronomy is a monthly American magazine about astronomy.
Astronomy Picture of the Day (APOD) is a website provided by NASA and Michigan Technological University (MTU).
A blueshift is any decrease in wavelength, with a corresponding increase in frequency, of an electromagnetic wave; the opposite effect is referred to as redshift.
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The Caldwell Catalogue is an astronomical catalog of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers.
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.
A circumpolar star is a star that, as viewed from a given latitude on Earth, never sets (that is, never disappears below the horizon), due to its proximity to one of the celestial poles.
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A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.
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NGC 869 is an open cluster located 7600 light years away in the constellation of Perseus.
New!!: Double Cluster and NGC 869 ·
NGC 884 is an open cluster located 7600 light years away in the constellation of Perseus.
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An open cluster, also known as galactic cluster, is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
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The Perseids are a prolific meteor shower associated with the comet Swift–Tuttle.
New!!: Double Cluster and Perseids ·
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky.
In astronomy, the Pleiades, or Seven Sisters (Messier 45 or M45), is an open star cluster containing middle-aged hot B-type stars located in the constellation of Taurus.
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The radiant or apparent radiant of a meteor shower is the point in the sky, from which (to a planetary observer) meteors appear to originate.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Frederick William Herschel, KH, FRS (German: Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer, and brother of Caroline Herschel.
New!!: Double Cluster and William Herschel ·