From: utzoo!decvax!harpo!seismo!hao!hplabs!sri-unix!dietz.usc-cse@UDel-Relay
Newsgroups: net.space
Title: Solar sailing from LEO
Article-I.D.: sri-unix.4974
Posted: Thu Dec 30 13:27:43 1982
Received: Sat Jan  1 01:23:56 1983

I doubt you could sail from LEO.  The drag on the sail from the upper
atmosphere would probably overwhelm light pressure.  Sails are probably
restricted to very high orbits, at least around planets with
atmospheres.

I've also heard that the L4 and L5 points are not the best,
energetically.  It's hard to get to them from the moon and from them to
geosynchronous orbit.