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the L def structure was built at NASA

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the L def structure was built at NASA
 

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the L def structure was built at NASA
Langley Research Center and shipped to

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Langley Research Center and shipped to
 

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Langley Research Center and shipped to
Kennedy Space Center in 1983 where

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Kennedy Space Center in 1983 where
 

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Kennedy Space Center in 1983 where
experiments were mounted to it in

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experiments were mounted to it in
 

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experiments were mounted to it in
preparation for launch these experiments

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preparation for launch these experiments
 

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preparation for launch these experiments
and the structure itself were designed

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and the structure itself were designed
 

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and the structure itself were designed
to better define and determine the

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to better define and determine the
 

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to better define and determine the
effects of the low Earth orbit

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effects of the low Earth orbit
 

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effects of the low Earth orbit
environment where man may someday live

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environment where man may someday live
 

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environment where man may someday live
as he extends his exploration of the

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as he extends his exploration of the
 

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as he extends his exploration of the
solar system

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quantum NFL death NASA's long-duration

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quantum NFL death NASA's long-duration
 

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quantum NFL death NASA's long-duration
exposure facility took place in April of

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exposure facility took place in April of
 

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exposure facility took place in April of
1984 it would become one of NASA's most

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1984 it would become one of NASA's most
 

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1984 it would become one of NASA's most
successful satellites the first

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successful satellites the first
 

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successful satellites the first
spacecraft ever to take advantage of the

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spacecraft ever to take advantage of the
 

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spacecraft ever to take advantage of the
space shuttles unique capability to

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space shuttles unique capability to
 

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space shuttles unique capability to
deploy experiments in space for long

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deploy experiments in space for long
 

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deploy experiments in space for long
exposure times and then return them

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exposure times and then return them
 

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exposure times and then return them
safely to earth for laboratory analysis

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safely to earth for laboratory analysis
 

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safely to earth for laboratory analysis
using a remote manipulator arm Terry

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using a remote manipulator arm Terry
 

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using a remote manipulator arm Terry
Hart lifted the LD from the shuttle

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Hart lifted the LD from the shuttle
 

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Hart lifted the LD from the shuttle
cargo bay and placed it in the proper

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cargo bay and placed it in the proper
 

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cargo bay and placed it in the proper
position for free flight in space the L

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position for free flight in space the L
 

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position for free flight in space the L
Deaf's initial orbit was 257 nautical

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Deaf's initial orbit was 257 nautical
 

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Deaf's initial orbit was 257 nautical
miles above the earth and inclination at

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miles above the earth and inclination at
 

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miles above the earth and inclination at
28 and 1/2 degrees as it orbited in free

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28 and 1/2 degrees as it orbited in free
 

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28 and 1/2 degrees as it orbited in free
flight one end always pointed toward

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flight one end always pointed toward
 

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flight one end always pointed toward
space the other always pointed toward

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space the other always pointed toward
 

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space the other always pointed toward
the center of the earth for 5 and 1/2

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the center of the earth for 5 and 1/2
 

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the center of the earth for 5 and 1/2
years l def would carry 57 experiments

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years l def would carry 57 experiments
 

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years l def would carry 57 experiments
in 86 trays mounted on its exterior it

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in 86 trays mounted on its exterior it
 

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in 86 trays mounted on its exterior it
would be the only source of data to

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would be the only source of data to
 

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would be the only source of data to
measure the effects of prolonged space

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measure the effects of prolonged space
 

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measure the effects of prolonged space
exposure on spacecraft materials and

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exposure on spacecraft materials and
 

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exposure on spacecraft materials and
living organisms the retrieval of L def

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living organisms the retrieval of L def
 

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living organisms the retrieval of L def
in January of 1990 marked the beginning

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in January of 1990 marked the beginning
 

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in January of 1990 marked the beginning
of scientific investigation for the more

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of scientific investigation for the more
 

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of scientific investigation for the more
than 200 researchers and scientists who

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than 200 researchers and scientists who
 

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than 200 researchers and scientists who
had launched their experiments 5 and 1/2

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had launched their experiments 5 and 1/2
 

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had launched their experiments 5 and 1/2
years earlier

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this time astronaut Bonnie Dunbar

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this time astronaut Bonnie Dunbar
 

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this time astronaut Bonnie Dunbar
operated the manipulator arm while

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operated the manipulator arm while
 

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operated the manipulator arm while
astronaut Marsha Ivins took the first

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astronaut Marsha Ivins took the first
 

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astronaut Marsha Ivins took the first
investigative photographs 10,000

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investigative photographs 10,000
 

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investigative photographs 10,000
specimens and virtually every part of

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specimens and virtually every part of
 

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specimens and virtually every part of
the facility will provide information

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the facility will provide information
 

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the facility will provide information
about what happens when things stay in

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about what happens when things stay in
 

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about what happens when things stay in
space for long periods of time the

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space for long periods of time the
 

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space for long periods of time the
facility and experiments will provide

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facility and experiments will provide
 

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facility and experiments will provide
unprecedented data on the magnitude of

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unprecedented data on the magnitude of
 

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unprecedented data on the magnitude of
induced radioactivity in materials

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induced radioactivity in materials
 

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induced radioactivity in materials
during prolonged exposure in space the

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during prolonged exposure in space the
 

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during prolonged exposure in space the
interstellar gas experiment will provide

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interstellar gas experiment will provide
 

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interstellar gas experiment will provide
insight into the formation of the

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insight into the formation of the
 

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insight into the formation of the
galaxies as captured interstellar gas

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galaxies as captured interstellar gas
 

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galaxies as captured interstellar gas
atoms are analyzed cosmic dust

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atoms are analyzed cosmic dust
 

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atoms are analyzed cosmic dust
experiments will provide insight into

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experiments will provide insight into
 

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experiments will provide insight into
the evolution of the solar system

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the evolution of the solar system
 

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the evolution of the solar system
through studies of the unparalleled

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through studies of the unparalleled
 

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through studies of the unparalleled
quantity of captured micrometeoroid

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quantity of captured micrometeoroid
 

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quantity of captured micrometeoroid
material radiation experiments will

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material radiation experiments will
 

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material radiation experiments will
provide data on radiation intensity and

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provide data on radiation intensity and
 

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provide data on radiation intensity and
its effects on living organisms studies

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its effects on living organisms studies
 

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its effects on living organisms studies
of thousands of materials associated

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of thousands of materials associated
 

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of thousands of materials associated
with design of spacecraft structures

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with design of spacecraft structures
 

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with design of spacecraft structures
thermal control systems power systems

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thermal control systems power systems
 

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thermal control systems power systems
optics electronic systems and propulsion

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optics electronic systems and propulsion
 

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optics electronic systems and propulsion
systems will be analyzed for

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systems will be analyzed for
 

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systems will be analyzed for
environmental effects of radiation

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environmental effects of radiation
 

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environmental effects of radiation
vacuum extreme temperature variations

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vacuum extreme temperature variations
 

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vacuum extreme temperature variations
atomic oxygen and collision with space

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atomic oxygen and collision with space
 

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atomic oxygen and collision with space
materials eventually all spacecraft and

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materials eventually all spacecraft and
 

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materials eventually all spacecraft and
spacecraft systems will be designed

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spacecraft systems will be designed
 

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spacecraft systems will be designed
using materials that have been validated

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using materials that have been validated
 

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using materials that have been validated
for long-duration space exposure for the

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for long-duration space exposure for the
 

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for long-duration space exposure for the
remainder of the mission l def was

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remainder of the mission l def was
 

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remainder of the mission l def was
safely tucked away in the space shuttles

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safely tucked away in the space shuttles
 

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safely tucked away in the space shuttles
cargo bay it remained there through the

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cargo bay it remained there through the
 

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cargo bay it remained there through the
shuttle landing at Edwards Air Force

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shuttle landing at Edwards Air Force
 

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shuttle landing at Edwards Air Force
Base and the piggyback ride to the

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Base and the piggyback ride to the
 

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Base and the piggyback ride to the
Kennedy Space Center in the orbiter

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Kennedy Space Center in the orbiter
 

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Kennedy Space Center in the orbiter
processing facility investigators got

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processing facility investigators got
 

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processing facility investigators got
their first glimpse of L dev initial

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their first glimpse of L dev initial
 

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their first glimpse of L dev initial
examinations focused on the

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examinations focused on the
 

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examinations focused on the
interrelationship of all experiments and

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interrelationship of all experiments and
 

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interrelationship of all experiments and
the L def structure then the

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the L def structure then the
 

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the L def structure then the
experimental trays were removed

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experimental trays were removed
 

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experimental trays were removed
and distributed to investigators for

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and distributed to investigators for
 

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and distributed to investigators for
data analysis the science experiments

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data analysis the science experiments
 

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data analysis the science experiments
hold exciting revelations regarding the

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hold exciting revelations regarding the
 

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hold exciting revelations regarding the
evolution of the Kosmos and biological

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evolution of the Kosmos and biological
 

185
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evolution of the Kosmos and biological
effects on long duration space exposure

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effects on long duration space exposure
 

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effects on long duration space exposure
as they relate to the presence of humans

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as they relate to the presence of humans
 

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as they relate to the presence of humans
in space l def technology experiments

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in space l def technology experiments
 

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in space l def technology experiments
will establish a database for use in

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will establish a database for use in
 

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will establish a database for use in
designing spacecraft such as Space

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designing spacecraft such as Space
 

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designing spacecraft such as Space
Station the most publicized experiment

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Station the most publicized experiment
 

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Station the most publicized experiment
is seeds which offers a wide variety of

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is seeds which offers a wide variety of
 

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is seeds which offers a wide variety of
opportunities for student experiments 12

200
00:04:51,300 --> 00:04:51,310
opportunities for student experiments 12
 

201
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opportunities for student experiments 12
and 1/2 million seed packages were

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00:04:53,460 --> 00:04:53,470
and 1/2 million seed packages were
 

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and 1/2 million seed packages were
distributed to upper elementary through

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distributed to upper elementary through
 

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distributed to upper elementary through
University level students American

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University level students American
 

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University level students American
students and students of foreign

208
00:05:00,360 --> 00:05:00,370
students and students of foreign
 

209
00:05:00,370 --> 00:05:02,249
students and students of foreign
countries have become interested in

210
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countries have become interested in
 

211
00:05:02,259 --> 00:05:04,080
countries have become interested in
science and the scientific method of

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00:05:04,080 --> 00:05:04,090
science and the scientific method of
 

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science and the scientific method of
Investigation by growing and comparing

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00:05:06,689 --> 00:05:06,699
Investigation by growing and comparing
 

215
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Investigation by growing and comparing
tomato plants from control seeds which

216
00:05:08,640 --> 00:05:08,650
tomato plants from control seeds which
 

217
00:05:08,650 --> 00:05:11,100
tomato plants from control seeds which
are kept on earth and experimental seeds

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00:05:11,100 --> 00:05:11,110
are kept on earth and experimental seeds
 

219
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are kept on earth and experimental seeds
which are housed on L def as it orbited

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00:05:13,320 --> 00:05:13,330
which are housed on L def as it orbited
 

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which are housed on L def as it orbited
the earth L Daffy and his experiments

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the earth L Daffy and his experiments
 

223
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the earth L Daffy and his experiments
are just beginning to define and

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are just beginning to define and
 

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are just beginning to define and
determine the effects of the lower Earth

226
00:05:20,279 --> 00:05:20,289
determine the effects of the lower Earth
 

227
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determine the effects of the lower Earth
orbit environment as investigators

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orbit environment as investigators
 

229
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orbit environment as investigators
interpret their data they grow

230
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interpret their data they grow
 

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00:05:26,139 --> 00:05:28,020
interpret their data they grow
confidence in the models they are using

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confidence in the models they are using
 

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confidence in the models they are using
to accurately predict this environment

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to accurately predict this environment
 

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to accurately predict this environment
all space vehicles that fly in low Earth

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all space vehicles that fly in low Earth
 

237
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all space vehicles that fly in low Earth
orbit will benefit from L Dell Space

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orbit will benefit from L Dell Space
 

239
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orbit will benefit from L Dell Space
Station freedom will be its first major

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Station freedom will be its first major
 

241
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Station freedom will be its first major
benefactor the L dev structure designed

242
00:05:40,350 --> 00:05:40,360
benefactor the L dev structure designed
 

243
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benefactor the L dev structure designed
for reuse may be available for use on

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for reuse may be available for use on
 

245
00:05:43,000 --> 00:05:46,229
for reuse may be available for use on
future L duck missions