Risultati di ricerca
2 giorni fa · A supernova (pl.: supernovae or supernovas) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway nuclear fusion.
20 giu 2024 · Di recente gli astronomi hanno individuato un numero di supernove 10 volte superiore a quelle mai osservate prima, compresa la supernova più antica e più lontana mai osservata. Le scoperte sono frutto dei dati acquisiti dal telescopio spaziale James Webb della NASA.
5 giorni fa · Crab Nebula. The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant and pulsar wind nebula in the constellation of Taurus. The common name comes from a drawing that somewhat resembled a crab with arms produced by William Parsons, 3rd Earl of Rosse, in 1842 or 1843 using a 36-inch (91 cm) telescope. [6]
15 giu 2024 · supernova, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level. The term supernova is derived from nova (Latin: “new”), the name for another type of exploding star. Supernovae resemble novae in several respects.
- The Editors of Encyclopaedia Britannica
4 giorni fa · L' universo è comunemente definito come il complesso che racchiude tutto lo spazio e ciò che contiene, [1] [2] [3] [4] cioè la materia e l' energia, che comprendono pianeti, stelle, galassie, e il contenuto dello spazio intergalattico. [5] [6]
2 giorni fa · Although neutrinos pass through the outer gases of a supernova without scattering, they provide information about the deeper supernova core with evidence that here, even neutrinos scatter to a significant extent.
10 giu 2024 · Webb finds 10 times more supernovae in the early universe than known before. NASA’s James Webb Space Telescope is proving to be a fine supernova hunter! With its extreme infrared sensitivity, Webb is finding far-off supernovae almost everywhere it looks.
