Berkeley writes : " Note that the dynamics of the Universe are not determined entirely by the geometry (open, closed or flat) unless the Universe contains only matter. In our Universe, where most of Omega comes from dark energy, this relation between the mass density, spatial curvature and the future of the universe no longer holds. It is then no longer true in this case that "geometry (spatial curvature) is destiny." Instead, to find out what will happen one needs to calculate the evolution of the expansion factor of the universe for the specific case of matter density, spatial curvature and "funny energy" to find out what will happen. Dark matter (DM) candidates are usually split into two broad categories, with the second category being further sub-divided: Baryonic Non-Baryonic hot dark matter (HDM) and cold dark matter (CDM), depending on their respective masses and speeds. CDM candidates travel at slow speeds (hence "cold") or have little pressure, while HDM candidates move rapidly (hence "hot"). " Are there really professional ideas beyond the standard model concerning this topic ? Let me say : I think, " professional " must not be the same as " correct " , and " unprofessional " mustn't always be dangerous. To work in a profession means to get paid by taxes. This can be complicated, look at the example of Prof. Jearl Walker and a high treason in the Nato Aerea by his fellow Pöppel : As i wrote in a www.groups.msn.de blog as BBBengel, the German mathematican Cantor ( ~ 1850 ) didn't have been able to revide his theory of infinity just because of the German military interests in war 1870/71. Let me show another example : The numbers int(sin(sin(n))+1) are random ( i.e. 0 1 0 1 1 0 1 0 0 1 1 0 1 1 0 ......) but is this blog random ? If you see just 20 percent of the universe ( 80 % are dark ), the universe cannot be stable, as I wrote in www.scifi-forum.de as Einstein007. Example 2 : A ladder isnt't stable, but two ladders ( see the " DNA " - structure ) are stable INDEED, but just whe the two ladders ( of amino-acids ) are infinite long ! So life cannot be stable !