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Such an event occurs when a white dwarf--the burnedout remains of a star similar in mass to the sun--siphons gas onto its surface from a companion star and eventually accumulates a layer of material that causes the white dwarf to explode. This suggests that the explosion came off the white dwarf in the form of jets, say scientists from Liverpool John Moores University in Birkenhead, England. Should the Earth survive being incinerated (astronomical and scientific opinion varies on this point), it will then become a dark, airless, frozen cinder as the sun enters the final stage of its star life, cooled and transformed into a dense white dwarf. |
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