Uncle Al wrote:

[snip]

>
> Gravitons are mathematically consistent curve fitting like dark
matter
> and dark energy.  There is no empirical evidence for their existence
> as such (e.g., promoting a virtual particle into a detectable real
> particle or detecting an extant real postulated particle).

Dark matter has been mapped through weak lensing.

It is there.

>
> --
> Uncle Al
> http://www.mazepath.com/uncleal/
>  (Toxic URL! Unsafe for children and most mammals)
> http://www.mazepath.com/uncleal/qz.pdf