Why Is Iron Significant to Understanding How a Supernova Occurs

question 27

Multiple Choice

Why is iron significant to understanding how a supernova occurs?

• A) Iron cannot release energy either by fission or fusion.
• B) Iron is the heaviest of all atomic nuclei, and thus no heavier elements can be made.
• C) Supernovae often leave behind neutron stars, which are made mostly of iron.
• D) The fusion of iron into uranium is the reaction that drives a supernova explosion.