Jun 8 1970
From The Space Library
First radar receiver developed by Naval Research Laboratory scientists was presented to Smithsonian Institution's Hall of Electricity by Capt. James C. Matheson, Director of NRL. Device had been successfully tested first on April 28, 1936, when it detected and ranged aircraft in flight at 40-km (25-mi) distance. (Naval Research Reviews, 7/70, 31)
Milky Way galaxy was losing gravitational energy at rate equivalent to mass of 1000 suns annually, Maryland Univ. physicist Dr. Joseph Weber said during third Cambridge Conference on Relativity at Institute for Space Studies in New York. Dr. Weber had measured flow of gravitational energy and computed energy being lost from source of waves in galaxy's center. Results indicated that eventually a star like the sun, at galaxy's edges, would break free of weakening gravity and fly off into space. One estimate had placed event at hundreds of millions of years in future. (AP, B Sun, 6/10/70, A3)
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