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Nebular Theory (Stars (Massive star (Red supergiant (expands to make all…
Nebular Theory
Stars
Massive star
brighter
short life
hotter
Red supergiant
runs out of hydrogen
expands to make all kinds of elements
forms iron
Supernova
gravity collapse the star until it explodes
only has iron left
Neutron Star
after the explosion the core remains
if core is not 4 times the mass of sun
star will disintegrate
if core is 4 times the mass of sun
becomes a neutron star
very small, radius usually 18 miles
very dense
composed mostly of packed neutrons
black hole
if core is 5 times the mass of the sun
its gravity is so strong light can't escape
super dense core of what was a massive star
Average star
colder
dimmer
long life
Red giant
and fuses helium into heavier objects
outer layer spreads out and cools
cool, large, red star
White Dwarf
after star runs out of helium
try to combine carbon
but fails so the gas expands away from star
leaves behind a hot glowing carbon called white dwarf
Black dwarf
when white dwarf runs out of remaining energy
it loses its brightness and becomes a black dwarf
uses up its hydrogen
Forms
gravity
pulls gas and dust
forms disk shape
pressure and temperature increase
nuclear fusion in core
material gets more dense
nebula gets smaller
Galaxies
made up of
planets
moons
solar systems
stars
how it forms
massive star
They fuse hydrogen into helium
10 times more massive than our sun
Red super giant
expands
makes elements
when massive star runs out of hydrogen
until it forms iron
#
supernova
gravity collapse the star
it explodes from pressure
Neutron star
very small
radius is typically 18 miles
very dense
Black hole
gravity is so strong light can't escape
what was a dense core of a massive star
creates galaxies
Solar System
made up of
planets
moons
stars
#
how it forms
collapsed nebulae
gravity
shrinks and begins to rotate
forms into a disk
temperatures rise
#
nuclear forms
star forms
dust clumps together in the disk and planets form
