text_original: His theory involved a body of about the size of Mercury revolving at somewhat less than half its mean distance from the Sun, or at a greater distance if of less mass and vice versa, whose motion in great part would explain the irregulari  ties observed.
text_transcription: HIS THEORY INVOLVED A BODY OF ABOUT THE SIZE OF MERCURY REVOLVING AT SOMEWHAT LESS THAN HALF ITS MEAN DISTANCE FROM THE SUN OR AT A GREATER DISTANCE IF OF LESS MASS AND VICE VERSA WHOSE MOTION IN GREAT PART WOULD EXPLAIN THE ILL REGULARITIES OBSERVED
phonemes: hɪz θˈiəɹi ɪnvˈɑːlvd ɐ bˈɑːdi ʌv ɐbˌaʊt ðə sˈaɪz ʌv mˈɜːkjʊɹi ɹᵻvˈɑːlvɪŋ æt sˈʌmwʌt lˈɛs ðɐn hˈæf ɪts mˈiːn dˈɪstəns fɹʌmðə sˈʌn, ɔːɹ æɾə ɡɹˈeɪɾɚ dˈɪstəns ɪf ʌv lˈɛs mˈæs ænd vˈaɪs vˈɜːsə, hˌuːz mˈoʊʃən ɪn ɡɹˈeɪt pˈɑːɹt wʊd ɛksplˈeɪn ðɪ ɪɹˌɛɡjʊlˈɑːɹɹi tˈaɪz əbzˈɜːvd.