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Viola sororia ( / vaɪˈoʊlə səˈrɔːriə / vy-OH-lə sə-ROR-ee-ə ), [ 5] known commonly as the common blue violet, is a short-stemmed herbaceous perennial plant native to eastern North America. It is known by a number of common names, including common meadow violet, purple violet, woolly blue violet, hooded violet, and wood violet.
Color–color diagram. A color–color diagram is a means of comparing the colors of an astronomical object at different wavelengths. Astronomers typically observe at narrow bands around certain wavelengths, and objects observed will have different brightnesses in each band. The difference in brightness between two bands is referred to as an ...
This class of stars was introduced with the Harvard sequence of stellar spectra and published in the Revised Harvard photometry catalogue. The definition of type B-type stars was the presence of non-ionized helium lines with the absence of singly ionized helium in the blue-violet portion of the spectrum. All of the spectral classes, including ...
Asystasia ansellioides C.B.Clarke var. lanceolata Fiori. Asystasia podostachys Klotzsch[ 1] Asystasia gangetica is a species of plant in the family Acanthaceae. It is commonly known as the Chinese violet, coromandel[ 2] or creeping foxglove. [ 3] In South Africa this plant may simply be called asystasia.
Luminous blue variable AG Carinae as seen by the Hubble Space Telescope. Luminous blue variables ( LBVs) are rare, massive and evolved stars that show unpredictable and sometimes dramatic variations in their spectra and brightness. They are also known as S Doradus variables after S Doradus, one of the brightest stars of the Large Magellanic Cloud .
It is a modification of the original icon that uses a background with the colors of the rainbow flag. It became popular in Spain from April 2019 following a tweet posted on the official account of the populist far-right party Vox , after which a multitude of users belonging to the LGBT movement began to use it as a symbol.
Blue giant. In astronomy, a blue giant is a hot star with a luminosity class of III ( giant) or II ( bright giant ). In the standard Hertzsprung–Russell diagram, these stars lie above and to the right of the main sequence . The term applies to a variety of stars in different phases of development, all evolved stars that have moved from the ...
The full moon is the culmination of a lunar cycle, and typically, there is one per month, equating to 12 full moons a year. A "blue moon" refers to a second full moon that falls within the same ...