2018年12月26日 星期三

supernova, Saturnalian delights



‘We take the singing angels, the gift-bearing kings, the star, but forget Joseph’s psychological torture and the fear and panic caused by Herod’s massacre of the Bethlehem children. One or both may be fictive, but they belong to the story as much as the happy shepherds and the gift-laden tree. A moment spent on thought about them might even enhance our Saturnalian delights.’
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SN 1994D (bright spot on the lower left), a Type Ia supernova outshining its home galaxy, NGC 4526
supernova (/ˌspərnvə/ plural: supernovae /ˌspərnv/ or supernovas, abbreviations: SN and SNe) is an event that occurs upon the death of certain types of stars.
Supernovae are more energetic than novae. In Latinnova means "new", referring astronomically to what appears to be a temporary new bright star. Adding the prefix "super-" distinguishes supernovae from ordinary novae, which are far less luminous. The word supernova was coined by Walter Baade and Fritz Zwicky in 1931.[1]

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