Ruzhena

Ruzhena (Ружена): an Earth-like planet in VK-71016 system. Valentin Petrov, the leader of the expedition that discovered it, named the planet after his wife, Ruzhena Naskova, but the planet wasn't really hospitable: two members of the spaceship crew perished on it and Petrov himself lost an arm. Ruzhena is described in "Частные предположения", a book that's been never translated in English and contains only a vague connection to the Noon Universe