In article ,
Maurice Barnhill   wrote:
>I wouldn't give up yet.  Current planet-searches are not as 
>sensitive to planetary systems like ours as they are to "hot 
>Jupiters."  The conclusion that there are two different 
>mechanisms for producing planetary systems is reasonable, but if 
>so the results of current searches for planets do not necessarily 
>imply that the number of systems like ours is small, only that 
>systems like ours are hard to observe.

Disks of crud have been seen around some young stars; such a
situation probably led to the formation of our solar system.
Once the crud has accreted into planets, their presence would
be hard to detect.  So, if someone could prove that disks of
crud were the rule rather than the exception early in stellar
evolution, and that very few stars have disks of crud later,
that would be significant.


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