ðɪs mæɡnˈɛɾɪk fˈiːld ɪz ɪndˈuːst baɪ ɐn ˌɪntɚɹˈækʃən bᵻtwˌiːn ðɪ ˈaɪənˌɑːsfɪɹ ænd ðə sˈoʊlɚ wˈɪnd, ɹˈæðɚ ðɐn baɪ ɐn ɪntˈɜːnəl dˈaɪnɐmˌoʊ ɪnðə kˈoːɹ lˈaɪk ðə wˈʌn ɪnsˈaɪd ˈɜːθ.
This magnetic field is induced by an interaction between the ionosphere and the solar wind, rather than by an internal dynamo in the core like the one inside Earth.