Horrible spelling on my part:  how about "that have led astrophysicists...".

On Sat, Feb 3, 2018 at 3:42 PM, Eric Walker <eric.wal...@gmail.com> wrote:

> On Fri, Feb 2, 2018 at 6:21 PM, <mix...@bigpond.com> wrote:
>
> So now, you have either proven that photons do contribute to gravitational
>> mass,
>> or that particles never enter a black hole. :)
>>
>
> Suppose for the sake of argument that photons carry mass in a very
> delocalized way.  Would there be enough of this mass to account for the
> experimental observations that heave lead astrophysicists to search for
> dark matter?
>
> Eric
>
>

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