Equinox in the Sky via NASA https://j.mp/2RLCCHI https://j.mp/2ZXTPT7

aki

5年前

Equinox in the Sky via NASA https://t.co/xueGSgzMmR pic.twitter.com/ictZdiwNcw

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) September 22, 2020

from Twitter https://twitter.com/o_ob