Gravel Ejected from Asteroid Bennu via NASA https://j.mp/33vYGf7 https://j.mp/3kyS7PZ

aki

5年前

Gravel Ejected from Asteroid Bennu via NASA https://t.co/gybq2Bxyyp pic.twitter.com/xRTz00jz1r

— Akihiko SHIRAI, Ph.D #VTC20 (@o_ob) September 16, 2020

from Twitter https://twitter.com/o_ob