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Russia 🇷🇺 @Russia
#OTD in 1855 Russian astronomer Lidiya #Tseraskaya was born. Initially a teacher, she married an astronomer & shared his passion. Over the 25 years of research, she discovered 2️⃣1️⃣9️⃣ variable stars by comparing photographs of different parts of the starry sky #OutstandingWomen https://t.co/0WeHtjKNUp — PolitiTweet.org