What celestial body produces helium?

Helium is primarily produced in stars through the process of nuclear fusion. In the cores of stars, hydrogen atoms fuse under extreme temperatures and pressures to form helium, releasing energy in the process. This fusion process is a key component of stellar evolution and is responsible for the energy output of stars like our Sun. Additionally, helium is also produced during the decay of radioactive elements in the Earth's crust, but the majority of helium in the universe is generated by stars.