And these are reasonably low power lasers... http://www.ee.surrey.ac.uk/SSC/IJSSE/issue1/unwin/unwin.html The simple fact is that the thermodynamic impact of a laser beam that is several feet across and emitting more photons than the surface of the sun will not be easy to reflect unless immense cooling is taken. Cost/weight factors alone argue it in the negative. Remember, that laser is hotter than the surface of the sun area for area. You'll need cooling systems comparible to the aircraft carrying the laser (consider the cooling of the main or final steering mirror alone in aircraft weight). Even the finest mirrors will not stand up to that uncooled, and even then not for long. Consider the expansive impact on the cryogenic fuel components. How much are they over-rated? -- -- ____________________________________________________________________ Nature and Nature's laws lay hid in night: God said, "Let Tesla be", and all was light. B.A. Behrend The Armadillo Group ,::////;::-. James Choate Austin, Tx /:'///// ``::>/|/ ravage@ssz.com www.ssz.com .', |||| `/( e\ 512-451-7087 -====~~mm-'`-```-mm --'- --------------------------------------------------------------------