<p>Comet Hale–Bopp - <a href="https://www.amazon.com/stores/Richard-C.-Hoagland/author/B001K80VLO?&_encoding=UTF8&tag=tabac01-20&linkCode=ur2&linkId=6e449ba15f29e07ef2aff099b3cdde09&camp=1789&creative=9325" target="_blank" rel="noopener noreferer">Richard C. Hoagland</a></p>

<p>Comet Hale–Bopp - <a href="https://www.amazon.com/stores/Richard-C.-Hoagland/author/B001K80VLO?&amp;_encoding=UTF8&amp;tag=tabac01-20&amp;linkCode=ur2&amp;linkId=6e449ba15f29e07ef2aff099b3cdde09&amp;camp=1789&amp;creative=9325" rel="noopener noreferrer">Richard C. Hoagland</a></p>

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April 17, 1997: Comet Hale–Bopp - Richard C. Hoagland

April 17, 1997: Comet Hale–Bopp - Richard C. Hoagland