Future Space Programs: Hearings Before the Committee on Science and Technology, U.S. House of Representatives, Ninety-fifth Congress, Second Session, January 24, 25, 26, 1978U.S. Government Printing Office, 1978 - 986 páginas |
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Página 124
... effects of man's activities are increasing rapidly . It is important because some trends may be essentially irrevers- ible ; contaminants introduced into the atmosphere or ocean or a decade during a single year may affect climate for ...
... effects of man's activities are increasing rapidly . It is important because some trends may be essentially irrevers- ible ; contaminants introduced into the atmosphere or ocean or a decade during a single year may affect climate for ...
Página 137
... effect on space science missions . In the case of planetary exploration missions this dependency includes the Interim Upper Stage as well as the Shuttle . Significant delays in Shuttle / IUS development or inability to achieve the ...
... effect on space science missions . In the case of planetary exploration missions this dependency includes the Interim Upper Stage as well as the Shuttle . Significant delays in Shuttle / IUS development or inability to achieve the ...
Página 141
... effects of this hostile environment on materials is a unique product of space science . We have learned that the lifetimes of spacecraft at high altitude - for example , in synchronous orbit- are limited by diverse radiation effects ...
... effects of this hostile environment on materials is a unique product of space science . We have learned that the lifetimes of spacecraft at high altitude - for example , in synchronous orbit- are limited by diverse radiation effects ...
Página 144
... effects on the composition of the Earth's surface , atmosphere , and perhaps its temperature . Atmospheric pollutants may affect the ozone layer and could modify the Earth's albedo . The burning of fossil fuels has already measurably ...
... effects on the composition of the Earth's surface , atmosphere , and perhaps its temperature . Atmospheric pollutants may affect the ozone layer and could modify the Earth's albedo . The burning of fossil fuels has already measurably ...
Página 145
... effects of man's activities are increas- ing rapidly . It is important because some trends may be essentially irreversible ; contaminants introduced into the atmosphere or ocean during a single year or a decade may affect climate for ...
... effects of man's activities are increas- ing rapidly . It is important because some trends may be essentially irreversible ; contaminants introduced into the atmosphere or ocean during a single year or a decade may affect climate for ...
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