Astronomii ştiu acum că ”noua stea” descoperită de Tycho nu este deloc nouă. Punctul strălucitor de pe cer nu anunţa naşterea unei stele ci moartea ei, prin transformarea într-o supernovă.
Iar explozia de acest fel este atât de puternică, încât strălucirea ei întrece în intensitate strălucirea unei întregi galaxii.
Această supernovă a fost una de tipul Ia şi se produce atunci când o stea din categoria piticelor albe atrage suficient de multă materie de la o altă stea-companion sau fuzionează cu aceasta.
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În urma exploziei, pitica albă este pur şi simplu distrusă, iar în imaginea prezentată pe site-ul NASA este vizibil ceea ce rămâne după unul dintre cele mai violente fenomene care se produc în Univers.
Diferitele culori din imagine sunt concentraţii de elemente chimice, cu diverse niveluri energetice, rămase în urma exploziei stelare.
Fotografiile au fost realizate de NASA cu observatorul cu raze X Chandra
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