Double-A Gravity can and does traverse all universes,and best to keep
always in mind "there are more universes in the cosmos than flakes of
snow in an endless storm". I use this as to answering the missing
gravity needed. It is not dark matter in our universe ,but comes from
the mutual gravity of all universes. gravity is a structural web of the
cosmos,and is shared by everything immersed in it. It is the intrinsic
force of space. Bert