

Konstantin Tsiolkovsky (18857 - 1935) in his study.
- Categories: Science & Technology
- Location: Kaluga, Russia
- Event date: 26.10.1925
- Date published: 25.10.2004
- Author: RIA Novosti
- Credit: Sputnik
- Source: Sputnik
- Original: 021606, 6x7 film
- Media: JPEG, 3000x1906px, 1.2Mb