Recycling Cassiopeia A via NASA https://j.mp/2Y5L87L https://j.mp/3paC911

Recycling Cassiopeia A via NASA https://t.co/4YnHGzMNyI pic.twitter.com/wm1YyhIBpz

— しらいはかせ #VRStudioLab (@o_ob) January 23, 2021

from Twitter https://twitter.com/o_ob