You could try the cosmology tribe but there is not much activity there.
A few smart people at quantum physics but then it does bring in the wierd ones that know not of what they speak.
What is your interest / questions / thoughts etc. ???
Cosmology is a area of interest to me.
The universe having a starting point in time (13.7 billion years ago) is clearly a central point of cosmology. Just not a central point of the universe. (me smiling as the universe does not have a center)