The obvious suggestion made is that the planet had a collision after its addition to the Solar System.= = = University = = =
ð ɪ WORD_BOUNDARY ɑ b v iə s WORD_BOUNDARY s ə d̠ʒ ɛ s t̠ʃ ə n WORD_BOUNDARY m eɪ d WORD_BOUNDARY ɪ z WORD_BOUNDARY ð æ t ð ə WORD_BOUNDARY p l æ n ɪ t WORD_BOUNDARY h æ d WORD_BOUNDARY ʌ WORD_BOUNDARY k ə l ɪ ʒ ə n WORD_BOUNDARY æ f t ə ɹ ɹ WORD_BOUNDARY ɪ t s WORD_BOUNDARY ʌ d ɪ ʃ ə n WORD_BOUNDARY t ə WORD_BOUNDARY ð ə WORD_BOUNDARY s oʊ l ə ɹ WORD_BOUNDARY s ɪ s t ə m WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY j uː n ɪ v ɜː s ɪ t i WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY iː k w ə l z WORD_BOUNDARY