Nickel-56 is produced in large quantities in type Ia supernovae and the shape of the light curve of these supernovae corresponds
to the decay via beta radiation of nickel-56 to cobalt-56 and then to iron-56.
Nickel-59 is a long-lived cosmogenic radionuclide with a half-llife of 76,000 years. 59Ni has found many applications in isotope geology. 59Ni has been used to date the terrestrial age of meteorites and to determine abundances of extraterrestrial dust in ice and
sediment.