On Sat, 10 Mar 2007 00:54:39 -0600, Henry Spencer wrote
(in article ):

Also note that the mass-ratio disparity is not as large as you'd think,
because a dense-propellant SSTO needs less delta-V to reach orbit.

Um, what?

--
You can run on for a long time,
Sooner or later, God'll cut you down.
~Johnny Cash