Click on "Show this thread" to see more. The Twitter user posted more about it as well, click his name to see his postings. There is also a website linked from his profile thats contains information about the "Soviet Exploration of Venus".

http://mentallandscape.com/

There's plenty of articles and forum discussions in Russian, if you want to use Translate I guess.

http://galspace.spb.ru/index114.html

https://habr.com/en/post/184444/

https://www.roscosmos.ru/23286/ (strangely I can't access the website... I hope it's just down, not blocked)

In the habr article there's this link to Don Mitchell's site: http://mentallandscape.com/V_Venus.htm

I'll be honest, I didn't read it D:

But wow, that is one awesome site! Thank you!

Wow that is an excellent site. Each page is a whole history.