The final stage in the life cycle of the most massive stars is a

Death.

Explanation:

The final stage of a red supergiant is the fusion of silicon into iron.

Hope my answer is helpful.

The Answer is : Supernova Explosion

satellites are frequently used to make observations of the orbit on earth

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: