Filaments of the Cygnus Loop Posted byleothecatSeptember 28, 2020Posted innasa What lies at the edge of an expanding supernova? source https://apod.nasa.gov/apod/ap200928.html Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading...
What lies at the edge of an expanding supernova? 
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