Filaments of the Cygnus Loop via NASA https://j.mp/3jaELZE https://j.mp/3kXtWLb

Filaments of the Cygnus Loop via NASA https://t.co/YwURTWfYJN pic.twitter.com/42XgpdT6SI

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) September 28, 2020

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