Pleiades: The Seven Sisters Star Cluster via NASA https://j.mp/2Fnv4rJ https://j.mp/2R7p0X9

aki

5年前

Pleiades: The Seven Sisters Star Cluster via NASA https://t.co/JxB3N5L8nU pic.twitter.com/xBjL9NVEBE

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) September 9, 2020

from Twitter https://twitter.com/o_ob