Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Soviet theoretical astronomer
You can help expand this article with text translated from the corresponding article in Russian. (March 2009) Click for important translation instructions.
View a machine-translated version of the Russian article.
Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Misplaced Pages.
Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article.
You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Russian Misplaced Pages article at ]; see its history for attribution.
You may also add the template {{Translated|ru|Идельсон, Наум Ильич}} to the talk page.
