Periodic Universal Gravitation Resulting in the Phenomenon of Dark
... 3) In the section (0, T 0/2), dr/dt>0 indicates cosmic expansion. When t approaches 0 from right, r≠0,
and dr/dt approaches infinity. At this singularity, all the known physical laws fail . When t=T0/2, dr/dt
=0, and r is at maximal value, and cosmos expands to the maximum. And the effect of the ...