Cosmos 🪐 on Nostr: La Boucle du Cygne, un magnifique rémanent de supernova, témoigne d'une explosion ...
La Boucle du Cygne, un magnifique rémanent de supernova, témoigne d'une explosion stellaire massive qui s'est produite il y a entre 5 000 et 8 000 ans.
Published at
2025-04-29 13:33:32Event JSON
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