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Science Forum Index » Physics Forum » Is Einstein, Jr. Out There?
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| Smoron |
 Posted: Tue Apr 29, 2008 9:15 am |
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Recently the Economist published an article calling for an Einstein,
Jr.
It seems that several space probes did not follow the path predicted
by general relativity. There seems to be an extra force in the
direction of the sun. |
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| Sam Wormley |
| Posted: Tue Apr 29, 2008 3:36 pm |
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Smoron wrote:
Quote: Recently the Economist published an article calling for an Einstein,
Jr.
It seems that several space probes did not follow the path predicted
by general relativity. There seems to be an extra force in the
direction of the sun.
"Pioneer Anomaly" Solved?
http://www.skyandtelescope.com/news/home/17846774.html
http://meetings.aps.org/Meeting/APR08/Event/83144
Author: Slava G. Turyshev (Jet Propulsion Laboratory, California Institute of Technology)
The Pioneer 10/11 spacecraft yielded the most precise navigation in deep
space to date. However, their radiometric tracking data received from
the distances between 20-70 astronomical units from the Sun has
consistently indicated the presence of a small, anomalous, Doppler
frequency drift. The drift is a blue frequency shift that can be
interpreted as a sunward acceleration of ap = (8.74 +/- 1.33) x 10^-10
m/s2 for each particular spacecraft. This signal has become known as the
Pioneer anomaly the nature of which remains unexplained. New Pioneer 10
and 11 radio-metric Doppler data recently became available that span a
longer interval compared to the data used in previous investigations. A
thermal model of the Pioneer vehicles is being developed to study
possible contribution of thermal recoil force acting on the two
spacecraft. The current status of these investigations will be
discussed. This work was carried out at the Jet Propulsion Laboratory,
California Institute of Technology under a contract with the National
Aeronautics and Space Administration. |
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| Uncle Al |
| Posted: Tue Apr 29, 2008 3:58 pm |
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| Guest |
| Posted: Thu May 01, 2008 3:32 am |
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On 29 avr, 15:15, Smoron <smoro...@hotmail.com> wrote:
Quote: Recently the Economist published an article calling for an Einstein,Jr.
It seems that several space probes did not follow the path predicted
by general relativity. There seems to be an extra force in the
direction of the sun.
Well, scores of Einstein,Jr.s have been posting their solution on this
very newsgroup for the past 10 years. All the economist needs to do
is to scan the ng archive and make their pick.
Besides, they should also have mentioned the second unrelated
anomaly on record for both Pioneers, that relating to the so-called
anomalous slowing down of the crafts rotation about their axis.
André Michaud |
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