Before revision: For example, the light curves of Type Ia supernovae are widely thought to be powered by the heating provided by radioactive products from the decay of Nickel and Cobalt into Iron (Type Ia light curve).
After revision: For example, the light curves of Type Ia supernovae are widely thought to be powered by the heating provided by radioactive products from the decay of nickel and cobalt into iron (Type Ia light curve).