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The stars, described as "ultracool subdwarfs" follow very unusual paths around our galaxy, the Milky Way.
They have low temperatures and are small enough to be close to planet-like objects.
Only a few dozen ultracool subdwarfs, which are up to 10,000 times fainter than the Sun, have been identified.
One of the oddest aspects of the stars is the rapid speed at which they travel. They have been clocked at more than a million miles per hour.
www.telegraph.co.uk...
His team of astronomers found that the stars had bizarre orbits. Some plunged deep into the centre of the Milky Way on eccentric, comet-like tracks. Others made slow, swooping loops far beyond the Sun's orbit. Unlike the majority of nearby stars, most ultracool subdwarfs spent a lot of time thousands of light years above or below the galactic disc.
Originally posted by mdiinican
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If you leave out the whole ancient Sumerian prophecy stuff, and things like zetatalk, there isn't a whole lot of reasons to believe in the existence of niburu left.
Does a Companion Star to Sun cause Earth's Periodic Mass Extinctions?
THE THEORIZED COMPANION STAR, THROUGH ITS GRAVITATIONAL PULL, UNLEASHES A FURIOUS STORM OF COMETS IN THE INNER SOLAR SYSTEM LASTING FROM 100,000 TO TWO MILLION YEARS. SEVERAL OF THESE COMETS STRIKE THE EARTH.
"Heavy snows are driven and fall from the world's four corners; the murder frost prevails. The Sun is darkened at noon; it sheds no gladness; devouring tempests bellow and never end. In vain do men await the coming of summer. Thrice winter follows winter over a world which is snow-smitten, frost-fettered, and chained in ice."
"Fimbul Winter" from Norse saga, Twilight of the Gods
By Lynn Yarris
Our species, Homo sapiens, arose approximately 250,000 years ago. In the beginning, we used tools of stone and sought shelter in caves. Today, our shelters scrape clouds and our tools allow us to see galaxies far beyond our own, or peer deep into the heart of matter itself. So much progress in such a short time, for in geological terms, the reign of our species has been but the proverbial blink of an eye. Imagine, however, what our record of achievement would be had our history been disrupted no less than five times by titanic nuclear wars, each delivering a destructive blast 10,000 times more powerful than the combined yield of all existing nuclear weapons in our world today.
Such upheaval is what many other species, including the dinosaurs, may have faced during the history of our planet, according to a theory set forth by a Lawrence Berkeley Laboratory (LBL) scientist and his colleagues. The theory postulates that every 26 to 30 million years, life on Earth is severely jeopardized by the arrival of a small companion star to the sun. Dubbed "Nemesis" (after the Greek goddess of retribution), the companion star�through its gravitational pull�unleashes a furious storm of comets into the inner solar system that lasts anywhere from 100,000 years to two million years. Of the billions of comets sent swarming toward the sun, several strike the Earth, triggering a nightmarish sequence of ecological catastrophes.
"We expect that in a typical comet storm, there would be perhaps 10 impacts spread out over two million years, with intervals averaging 50,000 years between impacts," says LBL astrophysicist Richard Muller. In 1984, Muller, along with UC Berkeley astronomer Marc Davis and Piet Hut, an astronomer with the Institute for Advanced Study at Princeton University, announced the Nemesis theory in Nature magazine. As could be expected, it was and remains controversial. However, although the evidence for the existence of Nemesis is still circumstantial, this evidence continues to mount, and the theory has so far withstood all challenges.
Nemesis was the culmination of a chain of events that began in 1977, in Gubbio, Italy, a tiny village halfway between Rome and Florence. Walter Alvarez, a UC Berkeley geologist, was collecting samples of the limestone rock there for a study on paleomagnetism. The limestone rock outside of Gubbio is a big attraction for geologists and paleontologists because it provides a complete geological record of the end of the Cretaceous period and the beginning of the Tertiary period. This transition took place 65 million years ago, and is of special significance to our species, for it marked the close of the "Age of Reptiles," when dinosaurs ruled the Earth. Sometimes referred to as "the Great Dying," the massive extinction that engulfed the dinosaurs claimed nearly 75 percent of all the species of life on our planet, including most types of plants and many types of microscopic organisms. As much as 95 percent of all living creatures might have perished at the peak of destruction.
Originally posted by debunky
They don't orbit other suns, they orbit the milkyway.
Originally posted by badmedia
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If our sun was part of a binary star system, then the effects of the 2nd star would be known. The sun makes up 99% of the mass in our solar system. Either the 2nd star would have to be really low mass, and orbit our sun - in which case is again subject to the laws mentioned above, or it would affect the sun and solar system in such a way that would be measurable/noticable as it would move.
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March 28, 2007: Read a letter from Pioneer Project Anomaly project director Slava Turyshev on the status of the analysis of the recovered Pioneer data.
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Something strange is happening in the outer reaches of our solar system. The Pioneer 10 and 11 spacecraft are not where they are supposed to be. These missions, launched in 1972 and 1973, have covered hundreds of millions of kilometers, heading toward the edge of our solar system. But something is holding them back. Each year, they fall behind in their projected travel by about 5,000 kilometers (3,000 miles).
Jet Propulsion Laboratory scientist John Anderson and his colleagues have been searching for an explanation since 1980. But as of yet, they have found nothing conclusive; no spacecraft behavior or previously unknown property of the outer solar system can explain the deceleration of the Pioneer spacecraft. Scientists are being forced to consider the unthinkable: something may be wrong with our understanding of the laws of physics. An important line of inquiry will be to study mounds of Doppler (velocity) data and spacecraft status data (like temperatures) that have been unavailable to researchers—but that is about to change.
Focus: the Pioneer anomaly
To date, the Pioneer 10 and 11 spacecraft are the most precisely navigated deep-space vehicles. However, as indicated by their radio-metric data, the Pioneers’ orbit reconstructions were limited by a small, anomalous, constant, blue-shifted, Doppler frequency drift of approximately 6 x 10^-9 Hz/s. The drift can be interpreted as due to a constant sunward acceleration of a_P = (8.74 ± 1.33) 10^-10 m/s^2. This interpretation has become known as the Pioneer anomaly.
Although the most obvious explanation would be that there is a systematic origin to the effect, the limited set of the analyzed data does not support any of the suggested mechanisms. We assert that analysis of the entire existing Pioneer data is vital to understanding the anomaly and, hopefully, to finding its origin. Indeed, analysis of the entire existing Pioneer data record is critical in attacking the anomaly on two fronts: (i) an analysis of the early, not rigorously analyzed, data could yield a more accurate direction of the anomaly and hence might help to determine its origin; (ii) by using the entire data set, from 1972 to 2002, one could study the temporal evolution of the anomaly and determine if it is due to on-board nuclear fuel inventory and related heat radiation or other mechanism.
Evidence Mounts For Companion Star To Our Sun
by Staff Writers
Newport Beach CA (SPX) Apr 25, 2006
The Binary Research Institute (BRI) has found that orbital characteristics of the recently discovered planetoid, Sedna, demonstrate the possibility that our sun might be part of a binary star system. A binary star system consists of two stars gravitationally bound orbiting a common center of mass.
Once thought to be highly unusual, such systems are now considered to be common in the Milky Way galaxy.
Walter Cruttenden at BRI, Professor Richard Muller at UC Berkeley, Dr. Daniel Whitmire of the University of Louisiana, amongst several others, have long speculated on the possibility that our sun might have an as yet undiscovered companion. Most of the evidence has been statistical rather than physical.
The recent discovery of Sedna, a small planet like object first detected by Cal Tech astronomer Dr. Michael Brown, provides what could be indirect physical evidence of a solar companion. Matching the recent findings by Dr. Brown, showing that Sedna moves in a highly unusual elliptical orbit, Cruttenden has determined that Sedna moves in resonance with previously published orbital data for a hypothetical companion star.
In the May 2006 issue of Discover, Dr. Brown stated: "Sedna shouldnt be there. Theres no way to put Sedna where it is. It never comes close enough to be affected by the sun, but it never goes far enough away from the sun to be affected by other stars... Sedna is stuck, frozen in place; there's no way to move it, basically there's no way to put it there – unless it formed there. But it's in a very elliptical orbit like that. It simply can't be there. There's no possible way - except it is. So how, then?"
"I'm thinking it was placed there in the earliest history of the solar system. I'm thinking it could have gotten there if there used to be stars a lot closer than they are now and those stars affected Sedna on the outer part of its orbit and then later on moved away. So I call Sedna a fossil record of the earliest solar system. Eventually, when other fossil records are found, Sedna will help tell us how the sun formed and the number of stars that were close to the sun when it formed."
Anomalies in the Solar System
Dittus, Hansjoerg
37th COSPAR Scientific Assembly. Held 13-20 July 2008, in Montréal, Canada., p.717
Several observations show unexplained phenomena in our solar system. These observations are e.g. the Pioneer Anomaly, an unexplained constant acceleration of the Pioneer 10 and 11 spacecraft, the Flyby Anomaly, an unexplained increase of the velocity of a series of spacecraft after Earth gravity assists, the recently reported increase of the Astronomical Unit defined by the distance of the planets from the Sun by approximately 10 m per century, the quadrupole and octupole anomaly which describes the correlation of the low l contributions of the Cosmic Microwave Background to the orientation of the Solar system. Lacking any explanation until now, these phenomena are still investigated intensively. In my talk I will discuss the present status of those investigations and the attempts to find reasonable explantions.
Here are some links which i posted in 2007 as Muaddib.
Apart form the other anomalies, what in the world is causing this "recent" increase of the Astronomical Unit of the planets from the Sun?
These missions, launched in 1972 and 1973, have covered hundreds of millions of kilometers, heading toward the edge of our solar system. But something is holding them back. Each year, they fall behind in their projected travel by about 5,000 kilometers (3,000 miles).
Originally posted by weedwhacker
Interesting. Formerly 'banned', now posting with new nick. Well, at least you're "honest".
Originally posted by weedwhacker
Herrrmmmm....could it be that our ability to measure is improving????
Originally posted by weedwhacker
Another of your "sources" mentioned some planets' orbits increasing in size. Or, that the 'AU' is increasing by 10 meters/century!! That is so paltry as to be laughable.
Originally posted by ElectricUniverse
And there are great forces in our Solar system we can not explain, hence there are theories about this twin to our sun. Remember that it is not a star, first and probably because it doesn't have enough mass to ignite. The Sun does have most of the matter in the Solar System " as far as we know", but there is much we don't know about our Solar System, and we are learning things from it constantly.
There are still other links i have to find, but other members as well as myself have given links to the fact that planets, and even satellites are being affected by something else which is excerting a force that affects satellites as well as planets.
BTW, i never said this twin star to our Sun would be moving at the same speed as this dwarf in specific.
I am pretty certain their speeds vary.
Originally posted by badmedia
Do you know how they detect if other stars have planets? They do it because the orbit of the planet makes that star wobble a bit, as the planets gravity pulls on it.
Originally posted by badmedia
If there were a twin star, it would cause this same wobble within our own sun. A star has to have a lot of mass, as I said before our sun contains 99% of the mass in our solar system.
Originally posted by mdiinican
I would assume it's due to tidal forces slowing the speeds of the earth and sun's rotations, and transferring angular momentum to the earth's orbital velocity, in a similar manner to what causes the distance to the moon to increase.
Originally posted by badmedia
If there were a twin star, it would cause this same wobble within our own sun. A star has to have a lot of mass, as I said before our sun contains 99% of the mass in our solar system.