On 21 Jun 2002, at 11:57, Bill Clawson wrote:
>
> One does not usually bother learning how to duck if one hasn't discovered
> that he is in danger of being shot. The more we put dollars into finding
> earth crossing asteroids, the more accurately we can determine to what
> degree we are in danger, which in turn could lead to the rapid development
> of technologies to do something about it, including drastically reduced
> launch costs. My guess is that you would need to have a significant
> presence in space (out around the lunar orbit, for instance) to effectively
> detect and deflect incoming asteroids due to the delta-v's involved.
To see small objects which are coming at Earth "out of the sun" (that
is, from that direction), we need to be looking from a vantage point closer
to the sun. It would not be that hard, or costly, to place a couple of
telescopes at inner-planet libration points ( a la "Venus Equilateral") to
do this observation.
Chris
_______________________________________________
ERPS-list mailing list
[EMAIL PROTECTED]
http://lists.erps.org/mailman/listinfo/erps-list
