Electron neutrino – Detected during studies of beta decay.

Muon neutrino – Discovered through particle accelerator experiments.

Tau neutrino – Identified as the heaviest active neutrino type.

Solar neutrino – Produced in the Sun’s nuclear fusion process.

Reactor neutrino – Emitted from nuclear reactor reactions.

Atmospheric neutrino – Created by cosmic rays in Earth’s atmosphere.

Sterile neutrino – Hypothetical, does not interact via weak force.