Complex sentence: In this way CLASS can improve our knowledge of when and how cosmic dawn occurred, which will help other experiments measure the sum of the masses of the three known neutrino types using the gravitational lensing of the CMB.
Split into simpler sentences: In this way CLASS can improve our knowledge of when and how cosmic dawn occurred. A better understanding of cosmic dawn will also help other experiments measure the sum of the masses of the three known neutrino types using the gravitational lensing of the CMB.