Solar sailing DOESN"T break laws of physics'

On 6 Jul 2003 10:44:05 -0700, in a place far, far away,
(Alex Terrell) made the phosphor on my monitor
glow in such a way as to indicate that:

If photons have mass, and if they travel at c, how come they don't
have infinite mass? Since they don't have infinite mass, they can have
no mass, and therefore no momentum.

You were doing fine until that last part. How do you conclude that no
mass means no momentum?

Please don't misintepret me. I do "believe" in solar sails. I'm just
trying to figure out how it works, because, in the normal world:

You mean the world in which light doesn't live?

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