Braking by lunar projectiles?

From: sailor.barsoom

> This is interesting. I wonder, would the projectiles have to be
> "spacecraft" at all? Would balls of dust, whacking the approaching
> payload with impacts too small to shatter it, but many thousands of
> them, work just as well?

That would certainly be a lot cheaper. Would take some careful aiming,
though.

Regards,

Mike Combs