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Planetary Nebula
Main sequence Star
(average)
Red Giant
Nebula
Gravity makes the particles pull together. As
they
Eventually Black Dwarf
White Dwarf
do this gravitational
all the hydrogen energy is converted
runs out
into
andheat
heliumenergy and the
is used temperature
instead as a fuelrises.
for
The star cools and its
When the temperature gets high enough,
nuclear fusion. This produces heavier
hydrogen nuclei undergo nuclear fusion to
elements like carbon dioxide and
Alight fades
form helium nuclei. This gives out massive
oxygen.
amounts of A
The star
swollen heat star
small,and
expands
that is and cools
reaching
cool A star
light energy.
dense,
theat
theA gaseous
surface
last as the
stagesshell of surrounding
inward
its and
life outward
cycle
bursts into Astar life!
that
small, has used
extremely hot up
and
forces become
A hot the hot
its
luminous
dense fuel unbalanced.
core
and
ball
star of gas
that of carbon
reached
haslike ourup
used sun. for an
extended period
producedthe end of
moststability
ofof
when itsitsathe
fuel
life Redoutward
cycle Giantpushing
force caused by nuclear fusion is balanced by the
contracts
inward pulling force of gravity…read more

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Planetary Nebula
Eventually all the hydrogen runs out
and helium is used instead as a fuel for Red Giant White
nuclear fusion. This produces heavier
elements like carbon dioxide and Dwarf
oxygen. The star expands and cools at
the surface as the inward and outward
forces become unbalanced.
A swollen star that
is reaching the last A gaseous shell
Main stages of its life surrounding the hot core
of carbon produced when
sequence Star cycle
a Red Giant contracts
(average) A small, extremely hot
and dense star that has
used up most of its fuel
Nebula
The star cools and its
A hot luminous ball of gas like our sun. for an light fades
extended period of stability the outward
pushing force caused by nuclear fusion is
balanced by the inward pulling force of gravity
Black Dwarf
Gravity makes the particles pull together. As they
do this gravitational energy is converted into heat
energy and the temperature rises. When the
temperature gets high enough, hydrogen nuclei
undergo nuclear fusion to form helium nuclei. A small, dense, cool
This gives out massive amounts of heat and light star that has used up
energy. A star bursts into life! its fuel and reached
the end of its life cycle…read more

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Large star life cycle…read more

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Main sequence Star
(large)
Nebula Supernova
Eventually
When all the
Red hydrogen
the temperature gets high
Supergiant runs out
enough,
Neutron
hydrogen
and star
helium nuclei
is undergo
used nuclear
instead as fusion
aBlack
fuel to
Hole
for
Nuclear
The
Gravity fusion
star
makes the continues
continues
particles
Protostar producing
to
pull use
together. upAs
form helium
nuclear nuclei.
fusion. This
This gives out heavier
produces massive
increasingly
they
its heavy
do this gravitational
fuel and elements.
energy is converted
ultimately
amounts
elements
into heat of heat
like
energy and
carbon
and light
the energy.
dioxide
temperature
Ultimately the fuel runs out, the core A
and star
rises.
collapses
bursts
oxygen.into under
life! the pull of
collapses and the star explodes as a at
The star expands and cools
A collapsed star
the
composed
surface
brilliant as
supernova
mainly A
A
of
the
Aswollen
young
colossalgravity
inward
star
star that
explosion
that
Its gravity is so strong that
is thatand
hasn't
reaching outward
occurs
not eventhe
light can escape
when
last stages
yet the core
startedof its
od life
a Red
nuclear cycle from it
forces
neutrons A hot
(alsobecome
luminousunbalanced.
called a ball of gas like our sun. for an
Supergiant collapses in on itself
pulsar)
extended period fusion in its the
of stability core outward pushing
force caused by nuclear fusion is balanced by the
inward pulling force of gravity…read more

Slide 6

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Eventually all the hydrogen runs out and Nuclear fusion continues producing
helium is used instead as a fuel for Red
increasingly heavy elements. Ultimately
nuclear fusion. This produces heavier Supergiant
the fuel runs out, the core collapses and
elements like carbon dioxide and oxygen.
The star expands and cools at the surface
the star explodes as a brilliant supernova
as the inward and outward forces
become unbalanced.
Supernova
Main A swollen star that is
sequence Star reaching the last stages of
(large) its life cycle
Nebula
A hot luminous ball of gas like our sun. for
an extended period of stability the outward A colossal explosion that
pushing force caused by nuclear fusion is occurs when the core od
balanced by the inward pulling force of a Red Supergiant
gravity
collapses in on itself
When the temperature gets
high enough, hydrogen nuclei The star continues to use up its fuel
Gravity makes the particles pull
undergo nuclear fusion to and ultimately collapses under the
together. As they do this
form helium nuclei. This gives gravitational energy is converted pull of gravity
out massive amounts of heat into heat energy and the
and light energy. A star temperature rises.
Neutron star
bursts into life! Protostar Black Hole
A collapsed star Its gravity is so strong
composed mainly of that not even light can
A young star that hasn't yet
neutrons (also called escape from it
started nuclear fusion in its
a pulsar)…read more

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