Simeis 147: Supernova Remnant via NASA https://j.mp/2Lp7IoP https://j.mp/3oI2ClJ

2020-12-10 aki

Simeis 147: Supernova Remnant via NASA https://t.co/wwMqyUgo4v pic.twitter.com/SGJeHlw9PR

— しらいはかせ #XRKaigi2020 (10日15時) #CCSE2020 (12:40)登壇予定 (@o_ob) December 10, 2020

from Twitter https://twitter.com/o_ob