🚀 go-pugleaf

If I can fit another technical question in between the election-year
propoganda...

I've been wondering about "slush" hydrogen ever since hearing about it
as part of the X-30(NASP) program.  I had always thought it was partially
frozen hydrogen, in an attempt to get the volume for hydrogen tanks
down to a reasonable level.

However, I've been unable to find any information other than verbal
descriptions of it (no numbers), and my initial assumption about frozen
hydrogen doesn't seem to hold up, as my CRC says:

	Density(liquid) 70.8g/l @-253 degrees C
	Density(solid) 70.6g/l @-262 degrees C

Now it is certainly possible that the density increases as the 
temperature continues to decrease, but I don't have that information.
Can someone explain this to me?

P.S. I still have received no information on the real drive source for
solar sails.  Help!

Disclaimer:  All opinions expressed are my own, and do not reflect the 
     position of Intel, Portland State University, or Zippy the Pinhead.  
============================================================================
Jeff Greason                  "You lock the door ... And throw away the key.
  <greason@ptdcs2.intel.com>   There's someone in my head, but it's not me."
  <jeffg@eecs.ee.pdx.edu>				-- Pink Floyd