Education
University of Minnesota.
University of Minnesota.
He received his Doctor of Philosophy in 1960 from the University of Minnesota, under John R. Winckler. He was a pioneer in the field of X-ray astronomy. He led the high-energy astronomy group at University of California, San Diego for many years.
In addition to carrying out numerous experiments using high-altitude balloons, he was principal investigator on several National Aeronautics and Space Administration satellite experiments, including one on the OSO 1, one on OSO 3, two on OSO 7, the A4 experiment on Hoger Economisch en Administratief Onderwijs 1, and co-investigator on the The High Energy X-ray Timing Experiment (HEXTE) flown on the Rossi X-ray Timing Explorer.