A Star That Would Not Die

A Star That Would Not Die

An image taken ​by ​the ​Palomar ​Observatory ​Sky Survey ​reveals ​a ​possible ​explosion ​in the ​year ​1954 ​at the ​location ​of ​iPTF14hls ​(left), ​not ​seen ​in ​a ​later ​image ​taken ​in ​1993 ​(right). ​Supernovae ​are ​known ​to explode only ​once, ​shine ​for ​a ​few ​months ​and ​then fade, ​but ​iPTF14hls ​experienced ​at ​least ​two explosions, 60 ​years ​apart. Adapted ​from Arcavi et ​al. ​2017, ​Nature.

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