Answer:
The Fe-60, (iron-60) is formed during the gigantic scale explosion of the stars. However the amount of the isotope that can be located here on Earth after coming from distant stars is small
The Fe-60 is therefore, a source of evidence that the solar system formed from the after effect of stellar explosions.
The abundance of iron in the universe consists of 90% Fe-56, which has 26 protons along side 30 neutrons.
The Fe-60 however has 34 neutrons and the extra 4 neutrons given the Fe-60 its radioactive properties, such that it decays to form nickel-60 with an half life of 1.5 million years.
The nickel-60 found in meteorites are therefore, more or less the remnant of the radioactive decay of Fe-60 formed during the supernova explosion that likely formed our solar system
Explanation:
