Founder of Soviet cosmonautics Konstantin Tsiolkovsky opening the mail in his study.
- Categories: Science & Technology, Human Interest
- Location: Kaluga, Russia
- Event date: 01.08.1935
- Date published: 21.12.2004
- Author: RIA Novosti
- Source: Sputnik
- Credit: Sputnik
- Original: А68-11321, 35 mm film
- Media: JPEG, 3000x2167px, 1.9Mb