English: This composite narrow-band image Halpha et OIII, is the remnant of a massive stellar explosion 40000 years ago. It has been the Astronomy Picture Of the Day - APOD- 2020-12-10
https://apod.nasa.gov/apod/ap201210.html
Français : Cette image bande étroite Halpha et OIII est le rémanent de l'explosion d'une étoile massive il y a environ 40000 ans. Cette image a été sélectionnée par L'APOD -le 12 décembre 2020
https://apod.nasa.gov/apod/ap201210.html
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