Nova wikipedia
A nova (pl. novae or novas) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star (hence the name "nova", Latin for "new") that slowly fades over weeks or months. All observed novae involve white dwarfs in close binary systems, but causes of the dramatic.
During the sixteenth century, astronomerobserved the in the. He described it in his.
Some novae leave behind visible , material expelled in the nova explosion or in multiple explosions.
A recurrent nova (RN) is an object that has been seen to experience repeated nova eruptions. The recurrent nova typically brightens by about 9.
Evolution of potential novae begins with twostars in a binary system. One of the twointo a , leaving its remnant white dwarf core in orbit with the remaining star. The second star—which may be either a main-sequence star or.
Astronomers have estimated that theexperiences roughly 25 to 75 novae per year.The number of novae actually observed in the Milky Way each year is much lower, about.
Novae have some promise for use asmeasurements of distances. For instance, the distribution of theiris , with a main peak at.
Novae are relatively common in the(M31); several dozen novae (brighter than+20) are discovered in M31 each year.The .
Nova (stylized as NOVΛ) is an Americantelevision program produced byin , , since 1974. It is broadcast on in the United States, and in more than 100 other countries.The program has won many major television awards.Nova often includes interviews with scientists doing research in the subject ar.
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