Posted by Jock on September 09, 2007 at 12:53:09 from 87.105.81.146 user Jock.
In Reply to: Re: Railway Maps and Swallows' Home posted by Robert Hill on September 08, 2007 at 19:27:43:
a substance supposedly not made of atoms. I remember thinking it rather implausible because of this substance.
Many physicists believe that the universe contains "dark matter", matter that influences the universe gravitationally, but is not directly observed.
A "dust" with hylopathistic properties also features in Philip Pullman's "Dark Materials" trilogy.