Mars Approach 2020 via NASA https://j.mp/33ySsMT https://j.mp/2I099Zc

aki

5年前

Mars Approach 2020 via NASA https://t.co/ExI4kSJ8ki pic.twitter.com/zpNuQAVQ8O

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) October 6, 2020

from Twitter https://twitter.com/o_ob