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More Spacecraft Velocity Anomalies
ZonkerWilliam recommends a bulletin from the American Institute of Physics, which discusses a study noting that recent spacecraft, such as NEAR, appear to display velocity anomalies much like those seen in Pioneer 10 (which were observed beginning ten years ago). The anomalies amount to up to 13 mm/sec., with a measurement accuracy of 0.1 mm/sec. Quoting: "A new look at the trajectories for various spacecraft as they fly past the Earth finds in each case a tiny amount of surplus velocity. For craft that pursue a path mostly symmetrical with respect to the equator, the effect is minimal. For craft that pursue a more unsymmetrical path, the effect is larger."
Does anyone else feel like they just read the first console in an old Bungie game? We should probably be arming ourselves.
It's actually 13 inches per hogshead, which is what they expected.
No problems here.
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They're getting sick and tired of these slow things and finally got out and started pushing.
;)
Must be it.
Or possibly dark matter...
Coz eternity my friend, is a long *ing time.
Could this anomaly possibly be explained by dark matter?
____
~ |rip/\/\aster /\/\onkey
I'm sorry officer; I was experiencing a velocity anomaly.
Dark matter?
Someone once said: The most profound scientific discoveries never begin with EUREKA! Usually they start with the words "now that's odd..."
I read the internet for the articles.
gravitons display a bias for polar rather than equatorial output. this was the basis for the graviton engine that first bought man...
oh shit, forgot what time line was in, you guys aren't supposed to discover this until 2039. dang it, screwed up again. i'll have to shut this time line down...
intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
We're sorry about the bugs you've been observing lately. The latest anomalies are due to bug #14310, a hardware glitch much like those present in your own Pentium processors.
We're trying as hard as we can to mitigate this issue, primarily by avoiding the use of floating point calculations in our physics engine. In the meantime, we're manually changing your physics books so that you'll be able to calculate the ship's movement correctly. In one day, you'll have no memory that this incident ever happened, so do not worry.
The AACS key is NOT 0xF606EEFD628B1CA427BEA93A9CA9773F
Number 857 #2, February 28, 2008 by Phil Schewe
More Spacecraft Velocity Anomalies
A new look at the trajectories for various spacecraft as they fly past the Earth finds in each case a tiny amount of surplus velocity. For craft that pursue a path mostly symmetrical with respect to the equator, the effect is minimal. For craft that pursue a more unsymmetrical path, the effect is larger. In the case of the NEAR asteroid rendevous craft (), for instance, the velocity anomaly amounts to 13 mm/sec. Although this is only one-millionth of the total velocity, the precision of the velocity measurements, carried out by looking at the Doppler shift in radio waves bounced off the craft, is 0.1 mm/sec, and this suggests that the anomaly represents a real effect, one needing an explanation.
Some ten years ago another anomaly was identified for the Pioneer 10 spacecraft (see http://www.aip.org/pnu/1998/split/pnu391-1.htm) and a certain amount of controversy has clung to the subject since then. One of the researchers on that earlier measurement is part of the new study, conducted by Jet Propulsion Lab scientists. John D. Anderson (jdandy@earthlink.net, 626-449-0102) says that the JPL scientists are now working with German colleagues to search for possible velocity anomalies in the recent flyby of the Rosetta spacecraft. (Anderson et al., Physical Review Letters, upcoming article; designated as an editor's suggested articlePhysical Review Letters)
Once you leave Earth for a while, particularly if you travel far, you realize that it doesn't suck quite as much as you thought.
A similar phenomenon occurs when traveling outside of the U.S.
Nasa & JPL determined in late October that the extra push pressure is from slight low energy gamma radiation from the core of our galaxy being red-shifted by going "uphill" (yeah, I know bad rubber-sheet analogy) out of the gravity well of the entire milky way. The spiral rotation factor of the spiral (once every 55 million years), though slight, is conjectured to impart further pressure of about 2.8 mm/sec.
It isn't noticable closer in because the heliopause outweights everything else. Only when you get closer to the outside of our solar system's bubble, does it become noticable.
Here is an interesting explanation for it by a PhD. with the following credentials:
Beginning in 1979 he worked for Sandia National Laboratories (New Mexico) in nuclear physics, geophysics, pulsed-power research, and theoretical atomic and nuclear physics. In 1985, he began working with Sandia's 'Particle Beam Fusion Project', and was co-inventor of special laser-triggered 'Rimfire' high-voltage switches, now coming into wider use.
The last few years at Sandia had seen greater emphasis on theoretical nuclear physics and radiation hydrodynamics in an effort to help produce the world's first lab-scale thermonuclear fusion. Besides gaining another U.S. patent, Dr Humphreys has been given two awards from Sandia, including an Award for Excellence for contributions to light ion-fusion target theory.
Here's his explanation: ( Includes physics equations. )
http://www.creationontheweb.com/images/pdfs/tj/j21_2/j21_2_61-70.pdf
...but those variations have been quantified with exquisite precision by half a century of satellite tracking. I'm guessing it has something to do with motion of molten metal in the earth's core, only now beginning to show up because it's a long-term effect.
rj
I'm amazed that they can apparently measure the speed of spacecraft that's millions of kilometers away, to a precision of 10e-4 m/s. How do they do this? I imagine it must be some sort of interferometry. Still, awesome. If only cruise control (with automatic distance control) was this accurate. :-)
The precision of the measurements is 0.1 mm/sec, not the accuracy. Those are different things.
Chemists use "un" to describe non-symmetric molecules pretty often- consider the rocket fuel UDMH: unsymmetrical dimethylhydrazine, though chemical reactions lacking symmetry are more often called "asymmetric," like the Sharpless asymmetric epoxidation. Asymmetric reactions can sometimes produce unsymmetrical products. Yes, it is unpossibly confusing. Just make sure to not confuse either "asymmetric" or "unsymmetric" with "antisymmetric."
"FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
no. That is wrong. The "particle" part of "wave-particle duality" does not refer to a separate state. Further, it doesn't have mass, either.
Can you be Even More Awesome?!
And light does not have a 'particle state'--it can be modeled as a particle, sure, but it really isn't. Light waves do not have "amplitude". And it is a particle and a wave at the same time, as are you. The concept is hard to get around at first. Either way, it can certainly be quantized and a single photon has a finite amount of energy based solely on it's frequency. The intensity is the sum of the total energies of the individual photons. If this were not the case, a lot of spectroscopy would be bunk.
Sadly, none of us can probably make a useful suggestion on this topic (one that would have eluded all the physicists that have been working on this). Unless the next Einstein is reading Slashdot,we can only make narrow conjectures. How many of us have the knowledge and data required? We might as well try to diagnose a medical condition based on a cursory discussion. It's fun to talk about, though.
John, yet ANOTHER Slashdot ID??? We told you to stop trolling here!
The solar wind output from the sun is anisotropic, and can certainly account for variations in a space probe's velocity. I'm wondering if that was taken into account in their calculations.
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The article has little information about what types of trajectories are affected, so this is just wild guessing. If the orientation of solar panels or dish antennas are markedly different for different trajectories, drag from particles or acceleration from absorbing/reflecting solar radiation can also differ. There's more garbage in the plantary plane, so there's more drag and more blocking of solar radiation.
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The Pioneer 10 and 11 speed-position anomalies, unaccounted drift, were noticed by the late 70's. NASA and the peole involved just didn't discuss it with the public until much later, after many potential sources of error and theoretical possiblities had been analyzed. That is when I first heard it mentioned, in Houston, ca 1977-78.
If those europeans and europeans-wanna-be stopped using fancy units of measurements, and just plainly used the well-worn all-American "Inches/just-a-sec" for measurements, there would be no anomolies.
The only mm/sec I know, is the # of m&ms I can pop into my mouth per second.
Come on already! How many fatal flaws have to be revealed before "scientists" will admit that the Theory of Gravity is invalid?
Intelligent Pushing describes this behavior quite easily. It's obvious that GSM would apply more appendage force to non-equatorial motion. Things going in odd directions are simply more fun to play with. Duh!
I'm surprised the electric universe otaku haven't jumped in to claim credit for this yet.
Who cares if it starts with the assumption that the universe is only 6000 years old? It has real physics equations.
Here is the summary from the article:
If a large volume of empty space surrounds the matter of the cosmos, so that the cosmos can have a centre of mass, then the matter is in a deep gravitational potential 'well'. If space is expanding and spreading the matter outward, then the depth of the well is decreasing. According to general relativity, especially a new solution of Einstein's equations derived in the Appendix (which also deals with Birkhoff's theorem), the decreasing depth continuously shortens 'radar' distances within the well, causing the observed apparent acceleration. The magnitude of the anomalous acceleration implies the bottom of the potential well has not yet risen very far above the critical depth for gravitational time dilation. Thus the Pioneer effect supports the essentials of several creationist cosmologies: a centre of mass, expansion of space and recent time dilation. Big bang theorists, whose cosmology does not have a centre of mass, cannot use this explanation.
Would you prefer crayon drawings?
Just what I'm aware of: the standard formulae for predicting the positions of planets are not very accurate.
This is due to the fact that the differential equation problem for an n-body problem is extremely difficult to get right. That said, there is another, newer method called the Parker-Sochacki solution to the Picard iteration(about 10 yrs old) that develops MacLauren series solutions to the N-body problems.
But if you plug the numbers into that solution, you still find that fairly significant error develops. That said, there error is a lot less. And what there is, problem comes from the many asteroids and planetoids that surround our Sun, as well as from nearby Oort clouds and whatnot.
Well, I wouldn't expect to find this type of an error -- velocity changes (as compared to what you expected) as you leave the equatorial plane -- coming from the nearby oort clouds. However, I would expect this kind of an error to result from both (1) using the older N-body approximations, and (2) the asteroids that are within the solar equatorial plane.
My guess -- if you look at the calculation methods used, they didn't use the PS method. And if you then use the error in planetary predictions under PS, to guess at the mass of in-plane asteroidal matter, you might find an additional reduction in error.
Correct Horse Battery Staple: 72 bits of entropy. Enter "Correct H" into google. When it generates the phrase, that's
I think it is more of the human ability to interpret vagueness into anything. The genesis description of the origin of the universe lends itself to analogy, which he uses in that paper. Now his physics may be accurate in that the Universe may extend much further than the matter we can detect, and that may explain the velocity anomaly. But to extend that to say that a very vague story from 3000 years ago is a true an accurate description of the universe's origins and that therefore the bible is literally true is just fantasy.
I've never been a believer. Recently, after reading The Selfish Gene and seeing just how much real evidence there is for evolution and seeing that science really _is_ an accurate and true explanation for how we came to be on the earth. It really does explain away any "need" for any sort of "personal god" as an alternate explanation. So, to give equal time to "the other side", I tried to read the bible. I got thru Genesis, but realized that there really is "nothing there" as far as explanatory power. And certainly to try to extract morals from the old testament would be a mistake. So then I got "Skeptics Answered" and again, there really isn't anything to the arguments of the believers.
While I'm interested in why people believe, and how we can change that going forward, I've really lost interest in _what_ they believe. It really holds no value as near as I can tell.
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Antisymmetric is when you hate Jews right?
What if Tetris was invented by Nazis?
What? They can measure the position AND momentum without changing the phase-shift impulse on their Heisenberg compensators? Don't tell Geordi
More music, fewer hits
but would you like to join the war of 1812? get back to me in the next 5 minutes before this wormhole closes
intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
That's no moon...
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