On Friday, November 6, 2020 at 1:40:16 PM UTC-6 [email protected] wrote: > On Fri, Nov 6, 2020 at 10:58 AM Lawrence Crowell <[email protected]> > wrote: > > *> If the entropy of the early universe were too large the current >> universe would be very different. In fact with black holes, if there were >> too many primordial BHs the universe would contain little other than BHs.* >> > > Maybe to a first approximation the universe does contain very little > matter except for primordial black holes if black holes turn out to be dark > matter, or at least a substantial part of it. I'm not saying it's true > I'm just saying it's possible. > > John K Clark >
That has largely been ruled out. By looking for microlensing it appears dark matter is less than 1% due to primordial black holes. LC > > > >> LC >> > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/0f7d6f35-39c1-4974-9b01-fa8b30729048n%40googlegroups.com.
