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MyCn18: tumannost' Pesochnye chasy
7.08.2011 | Astronomicheskaya kartinka dnya
Dlya central'noi zvezdy, obrazovavshei vokrug sebya
planetarnuyu tumannost' v forme pesochnyh
chasov, pesok vremeni pochti istek.
Vse yadernoe toplivo v centre etoi zvezdy, pohozhei na
Solnce, uzhe ischerpano. Teper' ona perehodit v korotkuyu, no zrelishnuyu zaklyuchitel'nuyu
fazu svoei zhizni,
sbrasyvaya s sebya vneshnie sloi obolochki, prevrashayas' v ogolennoe yadro — ostyvayushii
belyi karlik.
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