Caption: SCIENTISTS DISCUSS SATELLITE LAUNCHING--Dr. John P. Hagen, right, director of the Vanguard Project, smiles as he answers a question about the nation's newest satellite at a news conference today. Dr. Joseph Kaplan, chairman of the United States Committee for the International Geophysical Year, sits beside Hagen. The Vanguard director said the satellite launched this morning probably will be in orbit 5 to 10 years.
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