radioactive decay

The neutronfest is interspersed with radioactive decays that form new elements.

This mineral contains tiny amounts of uranium, which very slowly turns into lead via radioactive decay.

The team determined that the rocks formed from lava flows 2 billion years ago, but chemical analysis did not yield the concentration of radioactive elements one would expect if radioactive decay were to explain the volcanism.

Because radioactive decay occurs in the nucleus of the atom, half-life doesn’t change with environmental conditions, from the hellish heat and crushing pressures deep inside Earth to the frigid realm of the far solar system.

The second type, especially helium, forms as a byproduct of radioactive decay, processes that are still happening.

The muon is unstable, eventually undergoing a radioactive decay into an electron.