Russia π·πΊ @Russia
#OTD in 1908, Viktor #Ambartsumian was born - one of the founders of theoretical astrophysics, leading astronomer of the XX century. π He discovered stellar associations - new type of star clusters, proved that the process of stellar formation is still ongoing in the #MilkyWay. https://t.co/U3OgjA9OCP — PolitiTweet.org