• Comet Hale-Bopp 
  • Photos taken in Istria and Friuli (1997)
  • Facts and history
• Il cielo della Čičarija (Ciceria), il cielo di 50 anni fa
• International Space Station: Continuing the Journey
• Potocnik, Hermann - The Problem of Space Travel: The Rocket Motor (English translation of the 1929 German original, excluding images)

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Created: Saturday, July 07, 2001; Last updated: Sunday, October 07, 2007
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