Mare Frigoris via NASA https://j.mp/2GM4hq0 https://j.mp/2GAuCaJ

aki

5年前

Mare Frigoris via NASA https://t.co/Yg0udgKCsp pic.twitter.com/EcfzvqIwa4

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) October 8, 2020

from Twitter https://twitter.com/o_ob