A couple months ago I asked a some very basic questions concerning Iridium satellites. Thank you to all that responded; I have learned much thanks to your help. I can now explain why I needed your help to get me started; you may find it interesting... Back in the very beginning, I used a search engine to locate the VSOHP. I thought it was very odd that the home page had NO information on Iridiums. Here is the explanation: the search engine put me through to this URL: http://sat.physics.ox.ac.uk/sat/satintro.html It appears to be a very convincing-looking impostor. After one of you graciously pointed me to the CORRECT site, I found all the Iridium info I was looking for. Has this happened to anyone else? Can anyone explain what the duplicate site is supposed to be? Slightly inconvenient, if you ask me. Thanks again! Gregory May