5fish
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I remember back in the 1970's and 1980's people talk about Planet X. The missing planet that may have caused extinction events on earth because about every 14 million to 25 million years there is a mass extinction events on the earth at the as the fossil records were read. This Planet X would have a 14 million or more orbit around our sun and when it came close it s mass would cause metros to leave the Kuiper belt and head toward the inter planets. I remember this theory was poo poo by the scientist of that era.
en.wikipedia.org
Snip... some planet X theories... this only 3 of them...
Planet X[edit]
Lieder drew the name Planet X from the hypothetical planet once searched for by astronomers to account for discrepancies in the orbits of Uranus and Neptune.[19] In 1894, Bostonian astronomer Percival Lowell became convinced that the planets Uranus and Neptune had slight discrepancies in their orbits. He concluded that they were being tugged by the gravity of another, more distant planet, which he called "Planet X".[66] However, nearly a century of searching failed to turn up any evidence for such an object (Pluto was initially believed to be Planet X, but was later determined to be too small).[67]
The discrepancies remained through to the 1990s when the astronomer Robert Harrington put forward his hypothesis for an extra planet beyond Neptune with, as one example, a semi-major axis 101.2 AU and eccentricity 0.411 which makes its perihelion 59.60, so the closest to the Sun it would get is one and a half times the distance to Pluto.[68]
Six months before Harrington died of throat cancer[69][70] in 1992, astronomer Myles Standish showed that the supposed discrepancies in the planets' orbits were illusory, the product of overestimating the mass of Neptune.[71] When Neptune's newly determined mass was used in the Jet Propulsion Laboratory Developmental Ephemeris (JPL DE), the supposed discrepancies in the Uranian orbit, and with them the need for a Planet X, vanished.[72] There are no discrepancies in the trajectories of any space probes such as Pioneer 10, Pioneer 11, Voyager 1, and Voyager 2 that can be attributed to the gravitational pull of a large undiscovered object in the outer Solar System.[73] Today astronomers accept that Planet X, as originally defined, does not exist.[74]
snip...
Nemesis[edit]
See also: Nemesis (hypothetical star)
Believers in Planet X/Nibiru have often confused it with Nemesis,[79] a hypothetical star first proposed by physicist Richard A. Muller. In 1984, Muller postulated that mass extinctions were not random, but appeared to occur in the fossil record with a loose periodicity that ranged from 26 to 34 million years. He attributed this supposed pattern to a heretofore undetected companion to the Sun, either a dim red dwarf or a brown dwarf, lying in an elliptical, 26-million-year orbit. This object, which he named Nemesis, would, once every 26 million years, pass through the Oort cloud, the shell of over a trillion icy objects believed to be the source of long-period comets that orbit at thousands of times Pluto's distance from the Sun. Nemesis's gravity would then disturb the comets' orbits and send them into the inner Solar System, causing the Earth to be bombarded. However, to date no direct evidence of Nemesis has been found.[80] Though the idea of Nemesis appears similar to the Nibiru cataclysm, they are, in fact, very different, as Nemesis, if it existed, would have an orbital period thousands of times longer, and would never come near Earth itself
snip...
The Nibiru cataclysm is a supposed disastrous encounter between the Earth and a large planetary object (either a collision or a near-miss) that certain groups believed would take place in the early 21st century. Believers in this doomsday event usually refer to this object as Nibiru or Planet X. The idea was first put forward in 1995 by Nancy Lieder,[2][3] founder of the website ZetaTalk. Lieder describes herself as a contactee with the ability to receive messages from extraterrestrials from the Zeta Reticuli star system through an implant in her brain. She states that she was chosen to warn mankind that the object would sweep through the inner Solar System in May 2003 (though that date was later postponed) causing Earth to undergo a physical pole shift that would destroy most of humanity.[4]
I want to point out the math has come to recue... The math states its there, its a good read and it goes over some early thoughts there is a Planet X...
fivethirtyeight.com
snip...
The scientists who made headlines this week by announcing evidence for a new planet in our solar system are basing the claim entirely on a mathematical model. Nobody’s seen the thing, but the math says it’s there. This isn’t the first time scientists have found a new planet before really finding it, but this technique also has produced outright blunders. This time, though, astronomers say there’s reason to take the new potential planet seriously.
Planet Nine, as the astronomers have dubbed it, would be the first genuine planet discovered in our solar system since Neptune was found in 1846. (Pluto, found in 1930, was officially removed from the list of planets in 2006 by the International Astronomical Union.) And it’d be a big one. The model predicts that Planet Nine is five to 10 times the mass of Earth. Astronomers say it is possible such a substantial object could have eluded detection, because it allegedly lurks in the farthest outskirts of the solar system — moving in a lopsided path whose closest approach to the sun is still 40 times as far as Neptune. Each orbit would take upward of 10,000 years
snip...
Caltech astronomers Michael Brown and Konstantin Batygin say they’ve observed six icy bodies in the distant solar system moving in skinny, oblong orbits that are roughly aligned, like pencils pointing in approximately the same direction. Such a configuration is unlikely, they say, without something else forcing them to exist like that. That something else, they think, is Planet Nine.
snip... killer planet...
In the new paper, Brown and Batygin took things a step further, proposing a very elongated orbit for the unseen planet and a more detailed mechanism by which it might have herded the smaller bodies.
Is there a Planet X? The math says there is but it there one...
Nibiru cataclysm - Wikipedia
en.wikipedia.org
Snip... some planet X theories... this only 3 of them...
Planet X[edit]
Lieder drew the name Planet X from the hypothetical planet once searched for by astronomers to account for discrepancies in the orbits of Uranus and Neptune.[19] In 1894, Bostonian astronomer Percival Lowell became convinced that the planets Uranus and Neptune had slight discrepancies in their orbits. He concluded that they were being tugged by the gravity of another, more distant planet, which he called "Planet X".[66] However, nearly a century of searching failed to turn up any evidence for such an object (Pluto was initially believed to be Planet X, but was later determined to be too small).[67]
The discrepancies remained through to the 1990s when the astronomer Robert Harrington put forward his hypothesis for an extra planet beyond Neptune with, as one example, a semi-major axis 101.2 AU and eccentricity 0.411 which makes its perihelion 59.60, so the closest to the Sun it would get is one and a half times the distance to Pluto.[68]
Six months before Harrington died of throat cancer[69][70] in 1992, astronomer Myles Standish showed that the supposed discrepancies in the planets' orbits were illusory, the product of overestimating the mass of Neptune.[71] When Neptune's newly determined mass was used in the Jet Propulsion Laboratory Developmental Ephemeris (JPL DE), the supposed discrepancies in the Uranian orbit, and with them the need for a Planet X, vanished.[72] There are no discrepancies in the trajectories of any space probes such as Pioneer 10, Pioneer 11, Voyager 1, and Voyager 2 that can be attributed to the gravitational pull of a large undiscovered object in the outer Solar System.[73] Today astronomers accept that Planet X, as originally defined, does not exist.[74]
snip...
Nemesis[edit]
See also: Nemesis (hypothetical star)
Believers in Planet X/Nibiru have often confused it with Nemesis,[79] a hypothetical star first proposed by physicist Richard A. Muller. In 1984, Muller postulated that mass extinctions were not random, but appeared to occur in the fossil record with a loose periodicity that ranged from 26 to 34 million years. He attributed this supposed pattern to a heretofore undetected companion to the Sun, either a dim red dwarf or a brown dwarf, lying in an elliptical, 26-million-year orbit. This object, which he named Nemesis, would, once every 26 million years, pass through the Oort cloud, the shell of over a trillion icy objects believed to be the source of long-period comets that orbit at thousands of times Pluto's distance from the Sun. Nemesis's gravity would then disturb the comets' orbits and send them into the inner Solar System, causing the Earth to be bombarded. However, to date no direct evidence of Nemesis has been found.[80] Though the idea of Nemesis appears similar to the Nibiru cataclysm, they are, in fact, very different, as Nemesis, if it existed, would have an orbital period thousands of times longer, and would never come near Earth itself
snip...
The Nibiru cataclysm is a supposed disastrous encounter between the Earth and a large planetary object (either a collision or a near-miss) that certain groups believed would take place in the early 21st century. Believers in this doomsday event usually refer to this object as Nibiru or Planet X. The idea was first put forward in 1995 by Nancy Lieder,[2][3] founder of the website ZetaTalk. Lieder describes herself as a contactee with the ability to receive messages from extraterrestrials from the Zeta Reticuli star system through an implant in her brain. She states that she was chosen to warn mankind that the object would sweep through the inner Solar System in May 2003 (though that date was later postponed) causing Earth to undergo a physical pole shift that would destroy most of humanity.[4]
I want to point out the math has come to recue... The math states its there, its a good read and it goes over some early thoughts there is a Planet X...
How Math, And Not A Telescope, May Have Found A New Planet
The scientists who made headlines this week by announcing evidence for a new planet in our solar system are basing the claim entirely on a mathematical model. N…
fivethirtyeight.com
snip...
The scientists who made headlines this week by announcing evidence for a new planet in our solar system are basing the claim entirely on a mathematical model. Nobody’s seen the thing, but the math says it’s there. This isn’t the first time scientists have found a new planet before really finding it, but this technique also has produced outright blunders. This time, though, astronomers say there’s reason to take the new potential planet seriously.
Planet Nine, as the astronomers have dubbed it, would be the first genuine planet discovered in our solar system since Neptune was found in 1846. (Pluto, found in 1930, was officially removed from the list of planets in 2006 by the International Astronomical Union.) And it’d be a big one. The model predicts that Planet Nine is five to 10 times the mass of Earth. Astronomers say it is possible such a substantial object could have eluded detection, because it allegedly lurks in the farthest outskirts of the solar system — moving in a lopsided path whose closest approach to the sun is still 40 times as far as Neptune. Each orbit would take upward of 10,000 years
snip...
Caltech astronomers Michael Brown and Konstantin Batygin say they’ve observed six icy bodies in the distant solar system moving in skinny, oblong orbits that are roughly aligned, like pencils pointing in approximately the same direction. Such a configuration is unlikely, they say, without something else forcing them to exist like that. That something else, they think, is Planet Nine.
snip... killer planet...
In the new paper, Brown and Batygin took things a step further, proposing a very elongated orbit for the unseen planet and a more detailed mechanism by which it might have herded the smaller bodies.
Is there a Planet X? The math says there is but it there one...
