Stalkivayushiesya obolochki sverhnovyh
2.10.1997 | Astronomicheskaya kartinka dnya

Kogda v massivnoi zvezde konchaetsya yadernoe goryuchee, ona vzryvaetsya . Etot vzryv zvezdy - vzryv sverhnovoi - vytalkivaet ogromnoe kolichestvo zvezdnogo veshestva s nachal'noi skorost'yu neskol'ko millionov km v chas. Sleduyushie 100 tysyach let rasshiryayushayasya obolochka sverhnovoi postepenno zamedlyaetsya, vymetaya i slivayas' s gazom i pyl'yu mezhzvezdnoi sredy.