Disclaimer: Ensure you download from the official GitHub link provided above to avoid malicious files. Official releases are usually offered in .exe (installer) or .zip format, which are better managed by standard Windows tools or 7-Zip rather than needing a dedicated .rar extractor. Releases · Stellarium/stellarium - GitHub
Access the official releases on the Stellarium GitHub page .
Modelling movement for 15 couples of binary stars.
During installation or in the Configuration Window (F2), you can set the software language to Russian (Rus).