tom, if you are going to nasa j-track 3d and the java applet window isn't opening (as you said, the blocked popup sound chimed) you are missing the whole show, and a fabulous resource for visual demonstration of sats and their positions in realtime. I suggest you disable your popup blocker or firewall or whatever might be thwarting you. j-track 3d is a fine tool for explaining orbital types and dynamics to novices, I've found. instead of using the url you listed in your last post, try this slightly different one: http://science.nasa.gov/Realtime/JTrack/3D/JTrack3D.html also you might want to give the ol' encyclopedia astronautica a whirl. http://www.astronautix.com/ good luck and clear skies! stephan szyman chicago IL USA 41.6840N, 87.7000W; 188 msl > >I may have missed the obvious at the NASA site. I did however click on help >and all I got was the sound my computer makes when a pop up is blocked! I'm >about to chose one satellite, like the Hubble, and leave it at that. > > ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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