Hronika osvoeniya kosmosa: 1925 god.
7.01.2001 1:59 | A. B. Zheleznyakov/Enciklopediya Kosmonavtika
| 11.1925 | V Germanii opublikovana rabota Walter HOHMANN "Vozmozhnost' dostizheniya nebesnyh tel" (Die Erreichbarkeit der Himmelskorper). |
| 1925 | Laboratoriya po razrabotke izobretenii Nikolaya Ivanovicha TIHOMIROVA pereehala iz Moskvy v Leningrad. |
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