Is gravity cumulative

There are many objects that astromoners feel must be black holes - things they observe that are spinning at rates and absorbing energy at rates that prove out the theories.

Objects in centers of galaxies that have gravitational footprints that can only be answered by an object of that type.

Back when I went into business with my old partner - 25 years ago - I tried to convince him that we should produce a "star-finder" type program for a PC. PC's were a bit primitive back then - I wish we did, as products like that are sold in Astronomy magazine - and probably sell tons of copies. We even call our business Antares Computing Systems - amazing that we only produce business software :sick:

Yes very interesting indeed.
My eyes are wide open for the next century of space exploration and discovery. It is to bad I will not be alive for the days when we are as advanced as Star Trek Voyager :)

The closest I'll ever get to the field will be computer related -- but heck I wouldn't mind being chief programmer of simulations -- that to me is almost better than a job a game design company, which has been my main goal.

Which brings me to my last points -- We term our current physics - Modern Physics - often acompanied by "It is all it can tell us." -- All the men who have contributed theories, all the equations and formula's which stem from 16th century scientists like Newton. How absoleltly accurate can it all be comes into question so much -- well when you hear on the news that in 20 years a comet will pass so many KM over the earth and will be available to see at a said time in a said sky -- you no longer question our Modern Physics, you accept it as fact. Did you know, apparently our galaxy and the next one over "Adromeda" are moving towards each other -- they estimate in a few million years they shall merge -- no planets seem to be on a collision course but the effect will be interesting.

How accurate can it be?

It can't: Heisenburg's Uncertainty Principle prevents forever increasing accuracy - you are limited by the size of the wavelength of light.