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    Hi CM!
    Happy Birthday and clear skies.....
  2. View Conversation
    Hi Celestial Mechanic,

    I read with interest your posts on the NASA Baffled by Unexplained Force Acting on Space Probes.
    I was impressed that you took off to the library and obtained the latest data by the team claiming to have solved the math, if not the mystery.

    Do you do this kind of stuff for a living?


  3. Hello Celestial Mechanic,
    you must be familiar with the FCT seen your reply in "Discharge Theory (Graphs) and FCT" #5. Can you please have a look at "Four Color Theorem" starting with #384 . It's about a "classic proof" on the ArXiv site. I 'm eager for your replies on it, of coarse only if you enjoy to do it.

    Thanks in advance
  4. View Conversation
    Hello CM!

    Besides, the great website..Heavens-Above...there's another one you may know about or would like to's n2yo. just google in n2yo..

    I find it fascinating for real-time satellites tracking. even multiples. i've tracked some bundles / bunches of them over europe....mainly seem to be comms sats..of course.
    use n2yo to track ISS (and 'that tool bag') and her visitors!
    and Hubble of course!

    best regards
  5. View Conversation
    Celestial Mechanic - I read your 6 part post re precession and thought maybe you could guide me to a good source concerning precession measurements. It is my understanding from the NASA VLBI website that precession is measured relative to points outside the galaxy, i.e. quasars. This makes good sense for accuracy purposes but I was wondering if there is a reliable source of precession measurements relative to objects within the solar system (such as relative to the moon, Venus, etc.) over a period of years. While I realize that measuring the earth's changing orientation relative to points within the solar system will not have the same precision I am interested in the delta between the average of the two sets of measurements as I thought it might reveal something about the solar system motion around the galaxy. Do you happen to know if any "local" set of measurements exist? And where I can find them? Thank you in advance for any input you can provide.

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About Celestial Mechanic

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