Cygnus: Bubble and Crescent via NASA https://j.mp/3lUCp21 https://j.mp/3dwGSoO

aki

5年前

Cygnus: Bubble and Crescent via NASA https://t.co/SlFC445ltu pic.twitter.com/BwsiehQiA7

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) October 17, 2020

from Twitter https://twitter.com/o_ob