This number includes scientists from other fields such as physics, geology, and engineering, whose research interests are closely related to astronomy.
ðɪs nˈʌmbɚɹ ɪŋklˈuːdz sˈaɪəntɪsts fɹʌm ˈʌðɚ fˈiːldz sˈʌtʃ ɐz fˈɪzɪks, dʒɪˈɑːlədʒi, ænd ˌɛndʒɪnˈɪɹɪŋ, hˌuːz ɹᵻsˈɜːtʃ ˈɪntɹɛsts ɑːɹ klˈoʊsli ɹᵻlˈeɪɾᵻd tʊ ɐstɹˈɑːnəmi.