wrote:

James Nicoll wrote:

In article . com,
wrote:

The inner solar system does not have the resources of the Kuiper Belt.


Oh, yes? Which resources do you have in mind?


Lighter elements, as you say, and a virtually non-existent gravity
well.

There are comets in the main belt.

http://www.ifa.hawaii.edu/~hsieh/mbc-release.html

The main belt is characterized as a bunch of rocks. But we really don't
know much about those asteroids. I would wager that a good number are
volatile rich.

As Paul Dietz mentioned, large outer Kuiper belt objects might be cold
enough and have enough gravity to hold He3.

Hop