The birth of the modern widely accepted theory of planetary formation – the solar nebular disk model (SNDM) – is due to the Soviet astronomer Victor Safronov. His book "Evolution of the protoplanetary cloud and formation of the Earth and the planets", translated to English in 1972, had a big effect. In this book almost all major problems of the planetary formation process were formulated and some of them solved. Safronov's ideas were further developed. There are still quite a few aspects of the Solar System which need to be explained.
ð ə WORD_BOUNDARY b ɜː θ WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY m ɑ d ə ɹ n WORD_BOUNDARY w aɪ d l i WORD_BOUNDARY ʌ k s ɛ p t ɪ d WORD_BOUNDARY θ iə ɹ i WORD_BOUNDARY ʌ v WORD_BOUNDARY p l æ n ɪ t ɛ ɹ i WORD_BOUNDARY f ɔ ɹ m eɪ ʃ ə n WORD_BOUNDARY ð ə WORD_BOUNDARY s oʊ l ə ɹ WORD_BOUNDARY n ɛ b j ʊ l ə ɹ WORD_BOUNDARY d ɪ s k WORD_BOUNDARY m ɑ d ə l WORD_BOUNDARY ɛ s ɛ n d iː ɛ m WORD_BOUNDARY ɪ z WORD_BOUNDARY d uː WORD_BOUNDARY t ə WORD_BOUNDARY ð ə WORD_BOUNDARY s oʊ v iə t WORD_BOUNDARY ʌ s t ɹ ɑ n ə m ə ɹ WORD_BOUNDARY v ɪ k t ə ɹ WORD_BOUNDARY s æ f ɹ ə n ɑ v WORD_BOUNDARY h ɪ z WORD_BOUNDARY b ʊ k WORD_BOUNDARY ɛ v ə l uː ʃ ə n WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY p ɹ oʊ t oʊ p l æ n ɪ t ɛ ɹ i WORD_BOUNDARY k l aʊ d WORD_BOUNDARY æ n d WORD_BOUNDARY f ɔ ɹ m eɪ ʃ ə n WORD_BOUNDARY ʌ v ð ɪ WORD_BOUNDARY ɜː θ WORD_BOUNDARY æ n d WORD_BOUNDARY ð ə WORD_BOUNDARY p l æ n ɪ t s WORD_BOUNDARY t ɹ æ n s l eɪ t ɪ d WORD_BOUNDARY t ʊ WORD_BOUNDARY ɪ ŋ ɡ l ɪ ʃ WORD_BOUNDARY ɪ n WORD_BOUNDARY n aɪ n t iː n h ʌ n d ɹ ɪ d WORD_BOUNDARY s ɛ v ə n t i WORD_BOUNDARY t uː WORD_BOUNDARY h æ d WORD_BOUNDARY ʌ WORD_BOUNDARY b ɪ ɡ WORD_BOUNDARY ɪ f ɛ k t WORD_BOUNDARY ɪ n WORD_BOUNDARY ð ɪ s WORD_BOUNDARY b ʊ k WORD_BOUNDARY ɔ l m oʊ s t WORD_BOUNDARY ɔ l WORD_BOUNDARY m eɪ d̠ʒ ə ɹ WORD_BOUNDARY p ɹ ɑ b l ə m z WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY p l æ n ɪ t ɛ ɹ i WORD_BOUNDARY f ɔ ɹ m eɪ ʃ ə n WORD_BOUNDARY p ɹ ɑ s ɛ s WORD_BOUNDARY w ɜː WORD_BOUNDARY f ɔ ɹ m j ʊ l eɪ t ɪ d WORD_BOUNDARY æ n d WORD_BOUNDARY s ʌ m WORD_BOUNDARY ʌ v WORD_BOUNDARY ð ɛ m WORD_BOUNDARY s ɑ l v d WORD_BOUNDARY s æ f ɹ ə n ɑ v z WORD_BOUNDARY aɪ d iə z WORD_BOUNDARY w ɜː WORD_BOUNDARY f ɜː ð ə ɹ WORD_BOUNDARY d ɪ v ɛ l ə p t WORD_BOUNDARY ð ɛ ɹ ɑ ɹ WORD_BOUNDARY s t ɪ l WORD_BOUNDARY k w aɪ t WORD_BOUNDARY ʌ WORD_BOUNDARY f j uː WORD_BOUNDARY æ s p ɛ k t s WORD_BOUNDARY ʌ v ð ə WORD_BOUNDARY s oʊ l ə ɹ WORD_BOUNDARY s ɪ s t ə m WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY n iː d WORD_BOUNDARY t ə b i WORD_BOUNDARY ɛ k s p l eɪ n d WORD_BOUNDARY