Russian

The most spoken Slavic language, written in Cyrillic and required learning for every astronaut.

Core Principles & Analysis

• Around 150 million people speak it natively, more than all other Slavic languages combined.
• Its aspect-driven verb system pairs almost every verb into perfective and imperfective twins.
• It is an operational language of the International Space Station — crews train in it.

Specifications & Metrics

• FAMILY: Indo-European (Slavic)