This discrepancy was resolved in 2001 through the discovery of the effects of neutrino oscillation: the Sun emits the number of neutrinos predicted by the theory, but neutrino detectors were missing ​2⁄3 of them because the neutrinos had changed flavor by the time they were detected.
Kesenjangan ini diselesaikan pada tahun 2001 melalui penemuan efek osilasi neutrino: Matahari memancarkan beberapa neutrino sesuai prediksi teori, tetapi detektor neutrino kehilangan ​2⁄3 jumlahnya karena neutrino sudah berubah rasa saat dideteksi.