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the course of this country's future in

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space has been set Space Station freedom

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in low-earth orbit a permanent base on

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the lunar surface and then before the

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among many challenges to be met in

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achieving these goals is an efficient

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reliable way to provide spacefaring

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crews with fresh air clean water and

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nutritious field carrying enough of

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these vital supplies onboard will be

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costly and in many cases impossible

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especially for lengthy missions seeking

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alternatives researchers around the

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country including a group at NASA's

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Kennedy Space Center Florida are

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developing a system where plants recycle

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air water and waste and provide food

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plants in a water-based nutrient

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solution eliminates the need to carry

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heavy soil into space the work of dr.

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Steve Schwarzkopf an engineer at

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Lockheed in Sunnyvale California

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demonstrates how important it is to

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control the content of nutrient

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solutions he's discovering that when

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tomatoes and lettuce are grown in the

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same solution the lettuce doesn't fare

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so well what we do not know yet is

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whether this effect is caused by the

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tomatoes putting out some kind of a

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chemical into the nutrient solution

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through the roots or whether it might be

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due to the fact that they're taking up

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some nutrient that the lettuce needs and

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just not letting let us get it

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researchers at NASA's Johnson Space

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Center in Houston are growing plants in

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soils similar to those on the lunar

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surface their test chamber allows them

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to work at reduced atmospheric pressures

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likely to be used in habitats on the

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Moon and Mars the JSC team is also

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working to adapt physical chemical

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systems from the Apollo and shuttle

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programs to recycle on the land

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breathing air dr. mark cliffs at NASA's

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Ames Research Center in Mountain View

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California is integrating other

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recycling subsystems into a facility

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called the solid machine air circulated

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through a growth chamber collects

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moisture released by leaves this air is

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then drawn through an opening and the

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rear of the chamber and piped into a

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condenser which removes the water

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preliminary analyses indicate this

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recovered water is drinkable this could

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now evolve into a different kind of

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system tour perhaps we could utilize

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grey water in the nutrient solution and

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then recover essentially potable

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drinking water

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recycling in space enlisting the

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expertise of scientists and engineers