Why is iron significant to understanding how a supernova occurs?
iron is the heaviest of all atomic nuclei, and thus no heavier elements can be made.
the fusion of iron into uranium is the reaction that drives a supernova explosion.
iron cannot release energy either by fission or fusion.
supernovae often leave behind neutron stars, which are made mostly of iron.
both the moon and earth move during the roughly 28 day period it takes for the orbit, and because of this, water in the ocean is thrown to the outside, the same as the water in your bucket. the tidal bulge on the opposite side of earth from the moon is produced by this inertial effect, referred to as centrifugal force.
when we see the lunar phases we are only seeing one side of the moon and this side is called the sunlight side of the moon
iron is the heaviest o...