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

aki

5年前

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

from Twitter https://twitter.com/o_ob