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[ Music ]

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>> When man journeys to the
moon, he will use a large

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and complex transportation
system.

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It's called Apollo Saturn.

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All told, the assembly is 363
feet high and at ignition weighs

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over 6 million pounds.

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[ Music ]

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Of this, the portion
that will make the trip

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to the moon is the top 53 feet.

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[ Music ]

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The slender device at the very
top is the launch escape system.

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[ Music ]

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If the launch is smooth and
all systems operate properly,

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it is discarded early
in the flight.

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[ Music ]

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The spacecraft consists
of the command module,

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the service module,
and the lunar module.

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[ Music ]

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The command module is
crew quarters, cockpit,

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and headquarters for
the eight-day voyage.

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This is the only
portion of the spacecraft

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that will return to earth.

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The atmosphere inside will be

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such that the astronauts
will not have

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to endure the discomfort
of wearing their bulky,

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pressure-type spacesuits
all the time.

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However, for safety
and emergency reasons,

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one crew member will be in
his spacesuit at all times.

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[ Music ]

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Directly below the command
module is the service module.

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In a sense, this is the
basement of the spacecraft.

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Here are the fuel cells

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that will generate the
electricity required

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for the spacecraft, radio
antennas, storage space

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for experimental equipment and
tools, fuel and oxidizer tanks,

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for the surface module also
contains the main propulsion

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engine for lunar
and earth travel.

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As Apollo approaches the earth,
the service module is abandoned,

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and the command module
returns alone.

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[ Music ]

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At launch, the lunar module
occupies the third position

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in the spacecraft.

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During the lunar
trajectory, the command module

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and the service module fly out
about 100 feet, turn around,

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and come back to dock
with the lunar module.

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[ Music ]

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As the spacecraft approaches
the moon, it looks like this.

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[ Music ]

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The lunar module actually
consists of two vehicles,

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the descent stage, which
is mainly the landing gear

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and an engine that is
gimbled and can be throttled,

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and the ascent stage,
consisting of yet another engine

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and cockpit or cabin portion.

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After the lunar exploration
period,

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the descent stage is left on the
moon, as the ascent stage lifts

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to rendezvous with
the command module.

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After the crewmen transfer
to the command module,

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the lunar module is
left in lunar orbit,

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as the command module is steered
into its homeward course.

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[ Music ]

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Command, service, and lunar
modules each performing an