[ExI] Asteroid on track for possible Mars hit

[Amara Graps]

For a reference on Project Orion:

_The Starship and the Canoe_
http://www.amazon.com/exec/obidos/asin/0060910305/

(This dates me, but I remember when Freeman Dyson came to the bookstore
where I worked in my university (UCI) in the early 1980s to promote
this book.)

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Amara Graps, PhD      www.amara.com
Research Scientist, Southwest Research Institute (SwRI), Boulder, Colorado