Neville, Bear with my simple, non-scientific knowledge. If you can measure the speed of the Nasa spacecraft based on the rocket exhaust expulsion, then you can measure the speed of the moon by lining the spacecraft up with it. If I drive in the left lane of the Interstate going 70 miles per hour and I stay lined up with the car in the right lane, than I can conclude it is also going 70 miles per hour. If I follow your paper, then since the actual speed of the moon is greater if the Earth is geostatic and slower if the earth rotates, then it would seem man could determine the moons actual speed, if willing (and could probably determine the geo vs. helio issue in the same way). Since only Nasa has the rockets and apparently can't be trusted, is there something else moving in space of known speed (e.g. a satellite) by which to perform the same test. Regards, Nick. -- No attachments (even text) are allowed -- -- Type: text/plain -- File: InterScan_Disclaimer.txt