  The aim of this note is to remove an implausible assumption in Moser's
theorem \cite{JM} to establish our new theorem 1 which gives a lower estimate
for the sum $p+c^2\rho$ on Riemann hypothesis. Corollary 1 gives a rather
plausible construction of infinitely many models of universe with positive
density($\rho$) and pressure($p$) since it makes use of the state equation in
the form of an inequality.
