A Double Star Cluster in Perseus via NASA https://j.mp/2HhkUdO https://j.mp/38SzrIj

2020-11-18 aki

A Double Star Cluster in Perseus via NASA https://t.co/59xCtrVCYR pic.twitter.com/c13mg7dAyA

— Akihiko SHIRAI, Ph.D #VRStudioLab (@o_ob) November 18, 2020

from Twitter https://twitter.com/o_ob