Not the OP, but Tekhnika Molodezhi (Technology for the Youth) was quite popular in the Soviet Union. https://www.itsnicethat.com/features/tekinkia-molodezhi-russ...

Življenje in tehnika[1] – popular science magazine in Slovenia that's been running since 1950. Grandparents used to have my uncle's collection from I guess his high school years. Spanned from the mid 70's and into the 80's.

I used to read random issues when I'd go visit. My favorite were the 70's stories about "We are imminently going to have AI cars. Experiments are underway and trucks can now autonomously drive long distances on the highway! Humanoid robots are coming soon look at this super dextrous hand!!".

[1] https://www.tzs.si/zivljenje-in-tehnika/revija

On the sci-fi side one notable example is The Land of Crimson Clouds (Страна багровых туч, 1959) by the Strugatsky brothers. Unfortunately, there’s no official English translation that I can find.