Atomic density of interplanetary space


From: dlgsam@LanMinds.Com (Sandra A.M. & David G.)
Subject: Atomic density of interplanetary space
Date: Mon, 27 Oct 1997 22:07:23 +0100


I'm teaching some physics now and I wanted the figure for the atomic
density of interplanetary space in atoms/cubic cm so that I can make it
clear to my students why there is no friction in space to slow down planets
or spaceships.  I've spent way too much time unsuccessfully surfing the web
for this statistic, and I thought maybe someone on this list may have a
reference book which has it.  Clearly, my web searching skills need some
work!

David Glaser
Willard M.S.