Novosti
za 17 avgusta 2021.
Kalendar' nablyudatelya na sentyabr' 2021 goda Ocherednoi vypusk ezhemesyachnika, osveshayushego astronomicheskie yavleniya i nebesnye tela, dostupnye dlya nablyudenii nevooruzhennym glazom i lyubitel'skimi opticheskimi sredstvami |
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