194 



and objects within the solar system. Accomplishments Include the 

 first ultraviolet observation of a supernova, high resolution 

 ultraviolet spectrum of a star in another galaxy, and observation 

 of globular clusters- 



INFRARED ASTRONOMICAL SATELLITE (IRAS): This satellite was 

 launched in January 1983 to survey the infrared light in the 

 Earth's sky. It ceased operation in December 1983. The project 

 included cooperation with the United Kingdom and the Netherlands. 

 The total cost was $95 million. 



U.S.A. 



HIGH ENERGY ASTRONOMY OBSERVATORIES (HEAO) 



Marshall Spac<> Flight Center 



NASA 



"Big Science" Descriptor : Space: physics and astronomy 



Description of Facility/Instrument : These three missions have been 

 successful in determining the source of x-ray sources, partic- 

 ularly from the stars. In addition, HEAO-3 has studied the 

 origin and nature of gamma and cosmic rays. 



Date of Construction ; 1977-1979 (launches) 



Construction Cost ; 1984 $$ ; $250 million 



Present International Cooperation 



Nationality(8) of Ownership ; U.S. 

 Nationality(s) of Operational Funding ; U.S. 

 Nationallty(8) of Management Staff : U.S. 

 Natlonality(s) of Researchers : U.S. 



The HEAO-2 mission used an x-ray spectrometer supplied 

 by the Netherlands. The HEAO-3 mission Included French 

 experimentation for analysis of the Isotropic composition 

 of galactic radiation. 



Other Information ; These satellites are no longer operational, al- 

 though their data still are being analyzed; 



Launched 



HEAO-1 : August 12, 1977 

 HEAO-2 : November 13, 1978 

 HEAO-3 ; September 20, 1979 



