Supernovae

à So the star continues to collapse until iron nuclei are touching one another...

One of 2 things may be left behind...
A Neutron Star	OR	A Black Hole
At the center, the remains of the iron core collapses to force electrons and protons together to form neutrons resulting in a neutron star.		A sufficiently more massive star may collapse beyond the bounds of the neutrons and become a Black Hole.
If this neutron star emits energy in a particular direction, and we can detect it, it "pulses" a radio wave - called a Pulsar: [Clicking on image will begin download of an MPEG animation from Cambridge University in the UK]		Gravity becomes so great, not even light can escape; In effect, a "hole" in space-time is formed: Check out the Bijou Black Hole Page APOD: Planet Near a Galaxy Core
	Visit: The Web Nebulae and find stellar remnants.

	From all these processes, matter is strewn about space.

	When it gathers in enough abundance, another nebula is formed...a star-forming nebula.
	......Here is an Accretion Disk Simulation
à	The process of star formation can begin again.

	Many consider that we, therefore, are all made of "star stuff."

	*Back to ASTRONOMY Class Outline*