[Alan McDougall (OP)]

Hi,

The Pioneer anomaly
THIS is a tale of two spacecraft. Pioneer 10 was launched in 1972; Pioneer 11 a year later. By now both craft should be drifting off into deep space with no one watching. However, their trajectories have proved far too fascinating to ignore.

That's because something has been pulling - or pushing - on them, causing them to speed up. The resulting acceleration is tiny, less than a nanometre per second per second. That's equivalent to just one ten-billionth of the gravity at Earth's surface, but it is enough to have shifted Pioneer 10 some 400,000 kilometres off track. NASA lost touch with Pioneer 11 in 1995, but up to that point it was experiencing exactly the same deviation as its sister probe. So what is causing it?

[Soul Surfer]

The error is extrememy tiny and could be due to so many things including nearby black dwarf stars or black holes.  It will not be resolved until we launch a whole array of gravitational field probes way outside the solar system.

[Alan McDougall (OP)]

ZHUYH

Thank you for you comprehensive reponse

This conclusion by scientists with the United States is closer to the data. NASA launched the "pioneer of 10" 4 spacecraft slowdown issues since entering the new century the major celestial mechanics, It questioned Newton's Law of Universal Gravitation is accurate and powerful, It proved Kepler's idea of the gravity, the general theory of relativity proved that the "framework gravitational drag" forecast, It also scroll (the tangential component of gravity that is) the accuracy of the formula provide a more precise criteria. Reference: “Scroll of mysterious - gravity partner

Is the above suggeting Newtons "Law of Universe Gravity" is flawed in some way?, and so it might be, Newton was mortal like the rest of us, but with considerable more brain matter than I have in my head.

Alan

[Ron Hughes]

I think whatever explains the Pioneer 10 anomaly will all so explain the rotation curve of galaxies anomaly. The possibility that one of our fundamental laws is not the same in all parts of the Universe, F = ma comes to mind.

[JP]

Since this was a post from 2008 that's been unearthed, do any of the posters mind if I split off the "new theory" stuff (ZHUYH's posts) into New Theories so that if anyone reads this post now, they won't be confused?

Cheers,
JP (mod)

[Ron Hughes]

That is probably a good idea.

[JP]

Ok.  I moved the posts by ZHUYH to the New Theories section.  Hopefully this doesn't confuse the post too much...

[rwjefferson]

According to my Wikkipedia, [nofollow] they are not moving faster. 

“Both Pioneer spacecraft are escaping from the solar system, and are slowing down under the influence of Sun’s gravity...  “The magnitude of the Pioneer effect is numerically quite close to the product of the speed of light and the Hubble constant, but the significance of this, if any, is unknown.”

All spacecraft are dragged by Einstein’s predicted quantum aether.  What do you know of relative viscosity?  Hubble by the speed of light constant sounds about right to me.

peace
rwj