"Victoria" wrote in message
ups.com...
Dear uk.sci.astronomy
snip
Please see this updated and correct information about the International
Space Agency (ISA) Organization, Thanks.

With respect, whether or not a provider of Usenet has copies of the posts
that you refer to depends on their "retention rate" or caching. If you wish
those messages to be purged, you would have to contact each provider that
still has them on it's servers. There is no way anyone using this group can
change the situation.

If you try using a "proper" Usenet provider rather than Google and you may
find that the posts are no longer available. Google seem to be more than
content to cache obsolete posts. Whatever the reason behind this is beyond
me.

Regards,
Jim