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Sources
kevinforsyth.net
To Reach the High Frontier: A History of U.S. Launch Vehicles
"A valuable contribution to the field of aerospace literature," this book includes an extensive overview of Delta history and development along with chapters on Atlas, Titan, Scout, Space Shuttle, and much more.
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Many other excellent books about spaceflight are recommended here.
18-Nov-98 | ROSAT mission ends
The German X-ray observatory satellite ROSAT, launched in 1990 aboard the first Delta II to use a 10-foot-diameter fairing, was permanently shut down on Tuesday, 3 November. Officials determined that the last functional main focal plane instrument, a high-resolution camera, had been irreversibly damaged in September when it was pointed too close to the sun.
During its lifetime ROSAT made the first all-sky survey at X-ray wavelengths, charting more than 60,000 sources, nearly 100 times more than any previous survey. It was also used for study of specific X-ray sources such as quasars and neutron stars, and provided a wealth of data over the last 8 years; according to Spaceviews, “papers using ROSAT data are being published in scientific journals at a rate of more than one a day.”