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From: moroney@world.std.spaamtrap.com (Michael Moroney)
Newsgroups: sci.physics
Subject: Re: 'Dark Matter'
Date: Mon, 10 Aug 2015 23:31:16 +0000 (UTC)
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john <johnsefton288@gmail.com> writes:

>And, Michael, once those photons
>leave the sun, does it make any
>difference to that sun what they do or do not
>encounter? Momentum-wise or anything
>else-wise?

>No.

You finally got something right.

There are two events.  The sun emits a photon and recoils (actually the
emitting plasma particle recoils as the sun is not solid, as was pointed
out)  The photon later hits your eye (or a tree) and transmits its
momentum and energy to you (or the tree).