Speed of Gravity

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My understanding is that these are observations that have been made repeatedly over the years. Tom would normally be able to tell you specifically where to find the detailed reports but he is seriously ill now and not able to participate on anything like a regular basis. Perhaps one of our other members will be able to shed some light here? Or you might spend some time reading the various papers and articles that Tom has written and posted about gravity elsewhere on this site. Their reference sections may well contain the information you seek.

Interpreting such data re the question of the speed of propagation of gravitational force is theory dependent. Deep reality theories such as we champion here take solar system based data like eclipse observations and predict that gravitational force must propagate at least 20 times faster than light.

Observations of objects outside the solar system have pushed this constraint even higher.

Regards,
LB

You mean at least 20 billion times faster than light, don't you, Larry?

Hi,

Many thanks for your answers. I tried to find answer Tom's papers but I found only one reference to: "34. T. Van Flandern, Dark Matter, Missing Planets and New Comets (North Atlantic Books, Berkeley, 1993; 2nd edn., 1999), pp. 4550."

However, I did not found this book.

He also mentioned "U.S. Naval Observatory and the Development Ephemerides of the Jet Propulsion Laboratory" ?

I am trying to find answer to the following question:
Sun moves an angle of 20.5 arc seconds within 8.3 minutes. How accurately the difference between light and gravity vector direction can be measured ? Is the difference exactly the calculated one 20.5 sec or something else? I did not neither found this kind of measurement from NASA Gravity Probe B program.

Antti Roine

I never found the data either and gave up on that. The thing is the planets have to orbit a gravity center and the they move quite a way before the light from the sun arrives so the sun is not where it seems to be by looking at it. Logic indicates gravity cannot move at the speed of light. The meta model says gravity does move so thats why it has to be faster than light speed but it does not say why gravity has to move at all. So, it could be as Newton said but for some reason that is in question. If you fnd any data I hope you will post it here.

Jim: "The meta model says gravity does move so thats why it has faster than light speed but it does say why gravity has to move at all."

Hi Jim - is the above sentence correct, or did you mean to say " ... but it does NOT say why ... "?

Regards,
LB

Antti Roine " ...I tried to find answer Tom's papers but ... ".

"How accurately the difference between light and gravity vector direction can be measured ?"

It sounds like you might be looking for the raw observational data. Any time someone else digests the data for you and shows you the results it is possible that they made some unwarranted assumptions in their analysis. The only way to know for sure how big the error bars are is to process the data yourself.

Unless you are an experienced astronomer this can be very hard to do. But if you go to the thread titled "Fundamental Ephemeris Computations" in the "News and Information" forum there is a review of a book that can help you get started.

Regards,
LB