[ExI] Dawn's Early Light: Ceres and Vesta

Amara Graps amara at amara.com
Sun Jul 8 11:21:09 UTC 2007

In support of Dawn, to help answer the public's question:

"Why Ceres and Vesta?"

Here is one answer, some of which I would have said at the Dawn Science
Symposium, if the original, original plan for everything held.

Dawn's Early Light: Ceres and Vesta

where I finish with :


My Dawn Rocky Road Science List

Given that it is summer, and I'm located in Italy, where gelato is a
larger deity than Jupiter, here is my own rocky road list of science
questions that I would like the Dawn mission to help answer.

     * Where is the snow line and hence the emergence of water in the
     formation of the inner solar system?
     * How common are low temperature, aqueous processes in the early solar
     * What heated the asteroids?
     * When did the heating, melting, and differentiation occur in Vesta?
     * Where and when did most of the asteroids in the asteroid belt go?
     * Was the growth of Ceres truncated by Jupiter? When?
     * How fast is the step from asteroid-sized planetesimals to full-sized


Good luck to us all for the upcoming September / October launch
and the Dawn odyssey (*)!

(*) Odyssey:
1.  An extended adventurous voyage or trip.
2.  An intellectual quest



Amara Graps, PhD      www.amara.com
Associate Research Scientist, Planetary Science Institute (PSI), Tucson
INAF Istituto di Fisica dello Spazio Interplanetario (IFSI), Roma, Italia

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