Quake3World

Only known case in our lifetime: crossing of the dust trail of a known long period comet.
Long-period comets, such as were Hale-Bopp, Hyakutake, and McNaught, tend to sneak up on us. They are a potential impact danger. What can the dust trail tell us about their physical nature?
Their dust is a danger to satellites in orbit and man working on the Moon.
Dust stream could contain material from original cosmic-ray produced crust of comet.

nasa slips up admits men on moon now!...