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Old 01-20-2016, 03:53 PM   #1
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Default Earth Size Planet Found?

http://news.nationalgeographic.com/2...-system-space/
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Old 01-20-2016, 03:55 PM   #2
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Default Astronomers say a Neptune-sized planet lurks beyond Pluto

Oh boy. Fire up the Xers! This ain't a Daily Mail puff piece.

http://www.sciencemag.org/news/2016/...n-solar-system


(DATA) JPL; BATYGIN AND BROWN/CALTECH; (DIAGRAM) A. CUADRA/SCIENCE

Quote:
The solar system appears to have a new ninth planet. Today, two scientists announced evidence that a body nearly the size of Neptune—but as yet unseen—orbits the sun every 15,000 years. During the solar system’s infancy 4.5 billion years ago, they say, the giant planet was knocked out of the planet-forming region near the sun. Slowed down by gas, the planet settled into a distant elliptical orbit, where it still lurks today.

The claim is the strongest yet in the centuries-long search for a “Planet X” beyond Neptune. The quest has been plagued by far-fetched claims and even outright quackery. But the new evidence comes from a pair of respected planetary scientists, Konstantin Batygin and Mike Brown of the California Institute of Technology (Caltech) in Pasadena, who prepared for the inevitable skepticism with detailed analyses of the orbits of other distant objects and months of computer simulations. “If you say, ‘We have evidence for Planet X,’ almost any astronomer will say, ‘This again? These guys are clearly crazy.’ I would, too,” Brown says. “Why is this different? This is different because this time we’re right.”
The rest at Science.

Now we have to wait until they have covered the area where it could be. Inferring it is one thing, but producing an actual planet is quite another.
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Old 01-20-2016, 04:55 PM   #3
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Dupe. Threads merged.
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Old 03-28-2016, 02:26 PM   #4
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Is there really a NINTH planet in our solar system? Scientists say they have even more evidence of mysterious world
Quote:
Astronomer reveals newly found KBO 'where Planet Nine says it should be'
The mysterious gas giant is thought to be almost as big as Neptune
Signs of its existence were first found in January by Caltech scientists
http://www.dailymail.co.uk/sciencete...ous-world.html


Last week, Professor Mike Brown from Caltech tweeted a photo
that shows the plot of a newly discovered eccentric Kuiper Belt
Object (KBO)
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Old 03-28-2016, 03:27 PM   #5
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Cassini aids hunt for Planet Nine
http://www.nature.com/nature/journal...l/531417e.html

Quote:
Researchers using the Cassini spacecraft have narrowed down the search for the Solar System's hypothetical ninth planet.

Planet Nine is thought to be orbiting in the far outer Solar System, but has not yet been found. If it exists, its gravity should tug slightly on the outer planets, including Saturn. To determine Saturn's orbit, Agnès Fienga at the University of Nice Sophia Antipolis in Valbonne, France, and her colleagues used data from the ground-based radio-dish network that tracks the position of Cassini, which has been orbiting Saturn since 2004. Using a Solar System model refitted with Planet Nine, the researchers conclude that if it exists, the planet probably lies along a particular 21° slice of its predicted orbit.

If Cassini continues to operate until 2020, data from the spacecraft would further improve the estimate of the planet's location, the team says.
Does Planet Nine Exist? These Are The Tools Astronomers Are Using To Find It
http://www.techtimes.com/articles/13...to-find-it.htm

Kuiper Belt objects point the way to Planet 9
http://phys.org/news/2016-03-kuiper-belt-planet.html

Animated diagram showing the spacing of the Solar Systems
planet’s, the unusually closely spaced orbits of six of the most
distant KBOs, and the possible “Planet 9”.
Credit: Caltech/nagualdesign
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Old 03-30-2016, 10:52 AM   #6
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I have been waiting for this ever since the original announcement back in January that there is a real possibility of a planet larger than Earth on the far side of the Kuiper Belt or in the inner Oort Cloud.

The Planet X theory has been around for several decades now and while suggestive no one has ever found the smoking gun of the actual planet.

Researcher links mass extinctions to 'Planet X'
March 30, 2016 by Bob Whitby


http://phys.org/news/2016-03-links-m...ns-planet.html

Quote:
Periodic mass extinctions on Earth, as indicated in the global fossil record, could be linked to a suspected ninth planet, according to research published by a faculty member of the University of Arkansas Department of Mathematical Sciences.

Daniel Whitmire, a retired professor of astrophysics now working as a math instructor, published findings in the January issue of Monthly Notices of the Royal Astronomical Society that the as yet undiscovered "Planet X" triggers comet showers linked to mass extinctions on Earth at intervals of approximately 27 million years.

Though scientists have been looking for Planet X for 100 years, the possibility that it's real got a big boost recently when researchers from Caltech inferred its existence based on orbital anomalies seen in objects in the Kuiper Belt, a disc-shaped region of comets and other larger bodies beyond Neptune. If the Caltech researchers are correct, Planet X is about 10 times the mass of Earth and could currently be up to 1,000 times more distant from the sun

Whitmire and his colleague, John Matese, first published research on the connection between Planet X and mass extinctions in the journal Nature in 1985 while working as astrophysicists at the University of Louisiana at Lafayette. Their work was featured in a 1985 Time magazine cover story titled, "Did Comets Kill the Dinosaurs? A Bold New Theory About Mass Extinctions."

At the time there were three explanations proposed to explain the regular comet showers: Planet X, the existence of a sister star to the sun, and vertical oscillations of the sun as it orbits the galaxy. The last two ideas have subsequently been ruled out as inconsistent with the paleontological record. Only Planet X remained as a viable theory, and it is now gaining renewed attention.

Whitemire and Matese's theory is that as Planet X orbits the sun, its tilted orbit slowly rotates and Planet X passes through the Kuiper belt of comets every 27 million years, knocking comets into the inner solar system. The dislodged comets not only smash into the Earth, they also disintegrate in the inner solar system as they get nearer to the sun, reducing the amount of sunlight that reaches the Earth.

In 1985, a look at the paleontological record supported the idea of regular comet showers dating back 250 million years. Newer research shows evidence of such events dating as far back as 500 million years.

Whitmire and Matese published their own estimate on the size and orbit of Planet X in their original study. They believed it would be between one and five times the mass of Earth, and about 100 times more distant from the sun, much smaller numbers than Caltech's estimates.

Matese has since retired and no longer publishes. Whitmire retired from the University of Louisiana at Lafayette in 2012 and began teaching at the University of Arkansas in 2013.

Whitmire says what's really exciting is the possibility that a distant planet may have had a significant influence on the evolution of life on Earth.

"I've been part of this story for 30 years," he said. "If there is ever a final answer I'd love to write a book about it."
Periodic mass extinctions and the Planet X model reconsidered
Daniel P. Whitmire

http://mnrasl.oxfordjournals.org/con...55/1/L114.full

Quote:
Abstract

The 27 Myr period in the fossil extinction record has been confirmed in modern data bases dating back 500 Myr, which is twice the time interval of the original analysis from 30 years ago. The surprising regularity of this period has been used to reject the Nemesis model. A second model based on the Sun's vertical Galactic oscillations has been challenged on the basis of an inconsistency in period and phasing. The third astronomical model originally proposed to explain the periodicity is the Planet X model in which the period is associated with the perihelion precession of the inclined orbit of a trans-Neptunian planet. Recently, and unrelated to mass extinctions, a trans-Neptunian super-Earth planet has been proposed to explain the observation that the inner Oort cloud objects Sedna and 2012VP113 have perihelia that lie near the ecliptic plane. In this Letter, we reconsider the Planet X model in light of the confluence of the modern palaeontological and outer Solar system dynamical evidence.

CONCLUSION

With modest restrictions on inclination and eccentricity the Planet X model, as originally presented, is shown to be consistent with the regularity of the fossil extinction period, in contrast to the Nemesis model. Recent observational and theoretical studies suggest that a trans-Neptunian planet is more plausible today than when the model was first proposed. Although Trujillo & Sheppard (2014) acknowledged that their simulated orbits and masses were not unique, further numerical studies are needed to investigate the phase space of orbital parameters and masses capable of maintaining the ω clustering of detached TNOs around ω = 0. Of special interest is a planet of a few Earth-masses, semimajor axis ∼100 au, in an orbit with moderate eccentricity and inclination ≥25°.
To be clear we still haven't actually found Planet X (now usually called Planet Nine since Pluto's demotion to a dwarf planet), but it is being taken seriously enough for real resources and effort to be put into finding it.

IF they should find it the whole theory may need reworking in the face of better data, but nevertheless it's going to cause major changes in the way we view the history of the Earth and the Solar System in general.

Something shakes loose comets out of the Oort Cloud and outer Kuiper Belt from time to time. We have evidence in the historical record for that. But what the agent responsible actually is no one has ever been able to determine.

A lot of old arguments are about to be resurrected. Mostly still wrong. Mostly.
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Old 03-30-2016, 12:15 PM   #7
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Fortunately we appear to be in a weak period of bombardment. According to this graph, the last peak for cratering on Earth was 11.6 million years ago.

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Old 03-30-2016, 09:41 PM   #8
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I don't give a fig what those so called "scientists" say - Pluto is and always shall live in my heart as the one and only ninth Planet. Down sizing it is pure discrimination!!! LOL
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Old 03-31-2016, 09:37 AM   #9
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Quote:
Originally Posted by Antropologo View Post
Fortunately we appear to be in a weak period of bombardment. According to this graph, the last peak for cratering on Earth was 11.6 million years ago.

Which is a good thing for us!
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Old 04-05-2016, 10:23 AM   #10
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More evidence for Planet Nine as odd celestial alignment emerges
https://www.newscientist.com/article...nment-emerges/

A small world leads the way. There’s another tantalising hint that an undiscovered ninth planet lurks in the outer reaches of the solar system.

In January, Konstantin Batygin and Mike Brown at the California Institute of Technology inferred Planet Nine’s existence after studying six objects in the Kuiper Belt, the region of icy bodies that circle the sun beyond Neptune’s orbit.

All of these objects’ orbits take them slingshotting out to the most distant reaches of the solar system before swooping back in. What’s odd is that their eccentric orbits all point in roughly the same direction, when they should be oriented randomly in space. Such an alignment suggests that some unseen planet – 10 times as massive as Earth and four times its size – is shepherding them.

Smack-exactly

While the culprit has still not officially been discovered, Batygin and Brown argued that the chance this was a random occurrence was as low as 0.007 per cent. Although those seem like pretty good odds, the team suspected the number could be much lower and that there were more Kuiper Belt Objects with similar alignments out there. It was only a matter of time before they found another one.

And last week they did. It was spotted in an outer solar system survey, and announced quietly, on a single slide in a talk at the SETI Institute given by Michele Bannister of the University of Victoria, Canada. The object is so new it doesn’t have an official catalogue name yet, but it’s easy to see that its orbit is exactly like the other ushered Kuiper Belt objects.

“It’s smack-exactly where we predicted it should be,” says Brown.

For Brown, that’s a huge relief. He worried he was seeing patterns in the sky that weren’t really there, but the latest object strengthens his case for Planet Nine. “At least in my mind, it removes all doubts that the pattern that we’re seeing is real,” he says.

Although he has yet to run in-depth statistics on this latest object, Brown argues that it is likely to reduce the odds of the alignment occurring by chance to about 0.001 per cent.

Orbital inclination

But Greg Laughlin at the Lick Observatory in California isn’t convinced yet. “In addition to being clustered in their angle, they also should be pointing the same direction in three-dimensional space,” he says. In other words, they should all have the same tilt above or below the plane of the solar system. “And what this image doesn’t show is whether this new Kuiper Belt Object is doing that or not. It’s just impossible to tell.”

Still, if the object has that orbital inclination, which Laughlin and Brown expect it will, then “that makes it more likely that there’s some kind of dynamical explanation,” Laughlin says. “And among the dynamical explanations that have been offered, the Planet Nine hypothesis seems to make the most sense.”

Brown, whose discovery of the dwarf planet Eris earned him the nickname “Pluto Killer”, couldn’t be more excited. “It’s fun to see that first one,” he says. “We were pretty sure that it was going to be true, but you still keep your fingers crossed.”

== == == == == ==

Planet Nine might be an exoplanet stolen by the sun
https://www.newscientist.com/article...16-GLOBAL-hoot

Quote:


Home News Space

Daily news

4 April 2016, updated 4 April 2016
Planet Nine might be an exoplanet stolen by the sun

The hypothetical ninth planet at the fringes of our solar system might have been captured from a star passing by long ago
The Pleiades star cluster: it might have been the sun's nursery
The Pleiades star cluster: it might once have been the sun’s nursery, with planets ripe for the taking

NASA

Our solar system might harbour an alien interloper. The proposed Planet Nine lurking at the edge of the solar system could have been stolen from a passing star.

In January, Konstantin Batygin and Michael Brown announced evidence for an unseen planet around 10 times Earth’s mass lurking in the fringes of the solar system. Other astronomers immediately came forward with suggestions for how so-called Planet Nine might have migrated from the inner solar system towards its outer edges.

But one team now suggests just the opposite: that it was captured from a nearby star.

The idea isn’t all that far-fetched. The sun was born in a reasonably large stellar cluster with roughly 1000 or maybe even 10,000 stars, says Alexander Mustill from the Lund Observatory in Sweden. In such a dense cluster, the sun would have had quite a few close encounters with other stars, potentially letting them swap planets from time to time.

“It would be pretty wild – to pick up an alien planet and bring it along for the ride,” says Greg Laughlin at the Lick Observatory in California.
The rest at New Scientist.

The inferred evidence continues to mount. Now to actually lay eyes on the thing. If not it's going to come out to be the biggest astronomical wild goose chase of the last fifty years. If they find it then it's the biggest discovery since Pluto.

If they never find it at all then there is still the question of what is causing the Kuiper Belt Objects that we have found so far to line up the way they do?
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Old 04-07-2016, 10:46 AM   #11
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Planet Nine could be found by the end of the YEAR: Dark Energy Survey data is being used to identify the mysterious object 'tugging' on Nasa's Cassini


US astronomers said in January they may have found a ninth planet
Now researchers all over the world are trying to track it down
Gravitational 'tug' on Nasa's Cassini orbiting Saturn is being used
By luck, the Dark Energy Survey (DES) could also help find the planet


http://www.dailymail.co.uk/sciencete...s-Cassini.html


Agnès Fienga at the Côte d'Azur Observatory in France and her
colleagues checked whether a theoretical model with the new
addition of Planet Nine could better explain slight perturbations
seen in Cassini's orbit. They found a sweet spot that can explain
Cassini's orbit quite well


This is shaping up to be one of the most intensive astronomical searches we've ever done.
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Old 04-11-2016, 09:52 AM   #12
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Apropos of the article above:

The plot of 'Planet X' thickens: Nasa dismisses claims a mystery ninth planet is 'tugging' on its Cassini craft around Saturn
Quote:
US astronomers said in January they may have found a ninth planet
Gravitational 'tug' on Nasa's Cassini was used to narrow search
But Nasa scientists now say there has been no such tug on spacecraft
The Dark Energy Survey (DES) could still help find the planet
http://www.dailymail.co.uk/sciencete...ry-object.html
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Old 04-11-2016, 02:51 PM   #13
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I found a book this morning that goes deeply into the possible interaction between humans and that planet 5000 - 15000 years ago. The book was written.... a long time ago and is based on ancient texts like the old testament and the Sumerians, etc.
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Old 04-11-2016, 03:01 PM   #14
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How is old Immanuel doing?
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Old 06-13-2016, 12:07 PM   #15
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Default Planet Nine might not be alone: Astronomers suggest there could several hidden worlds in our solar system

Quote:
In January, Caltech astronomers predicted the existence of Planet Nine
Simulations explained a clumping behaviour of a group of dwarf planets
New study shows these dwarf planets would not be as stable as thought
Most stable scenario would be if there was more than one extra planet
http://www.dailymail.co.uk/sciencete...ar-system.html


The motions of the extreme trans-Neptunian objects (as illustrated
on the right) suggest that there is an unknown planet (artist's
impression left) in the confines of the solar system. But the latest
theory suggests something none had predicted before, that 'Planet
Nine' might in fact be several planets instead of just one


Quote:
Now, astronomers from Spain and Cambridge University have confirmed, with new calculations, that the orbits of the six extreme trans-Neptunian objects that were used a reference to announce the existence of Planet Nine are not as stable as it was thought.

The evidence gathered by the authors makes them believe the most stable scenario is one in which there is not just one planet, but rather several more beyond Pluto, in mutual resonance, which best explains the results.
Of course we haven't - yet - found physical evidence of even the one planet, much less several. Still, it's interesting to think about.

Link to the study this article is based on: http://arxiv.org/abs/1604.06241
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Old 07-06-2016, 10:00 AM   #16
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Could dark energy find a hidden world in our solar system? 'Planet Nine' may be uncovered by the end of SUMMER

US astronomers said in January they may have found a ninth planet
Earth-Saturn distance measured by Nasa's Cassini used to narrow search
But Nasa scientists now say there has been no such tug on spacecraft
The Dark Energy Survey (DES) could still help find the planet soon


http://www.dailymail.co.uk/sciencete...ding-data.html


Cerro Tololo Inter-American Observatory in Chile, the home of the
Dark Energy Camera



The six most distant known objects in the solar system with
orbits exclusively beyond Neptune (magenta) all mysteriously
line up in a single direction. Such an orbital alignment can only
be maintained by some outside force, according to the Caltech
researchers who predicted Planet Nine in January
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Old 10-21-2016, 10:12 AM   #17
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'Planet Nine' Can't Hide Much Longer, Scientists Say

http://www.space.com/34455-planet-ni...ial_spc_514630


Artist's illustration of Planet Nine, a world about 10 times more
massive than Earth that may lie undiscovered in the outer solar
system.
Credit: Caltech/R. Hurt (IPAC)


Quote:
Planet Nine's days of lurking unseen in the dark depths of the outer solar system may be numbered.

The hypothetical giant planet, which is thought to be about 10 times more massive than Earth, will be discovered within 16 months or so, astronomer Mike Brown predicted.

"I'm pretty sure, I think, that by the end of next winter — not this winter, next winter — I think that there'll be enough people looking for it that … somebody's actually going to track this down," Brown said during a news conference Wednesday (Oct. 19) at a joint meeting of the American Astronomical Society's Division for Planetary Sciences (DPS) and the European Planetary Science Congress (EPSC) in Pasadena, California. Brown said that eight to 10 groups are currently looking for the planet.
The rest at Space.com

What's *really* going to set a fox among the chickens is if they *don't* find a planet. They'll have to come up with another explanation for what they are seeing.

The evidence continues to build that *something* is perturbing the orbits of all these dwarf planets in a particular way. If only they could lay eyes on the thing.

Remember reading Lucifer's Hammer? That same something is very likely to be what perturbs the orbits of long period comets that come whizzing through the inner Solar System where we're at.
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Old 10-21-2016, 12:29 PM   #18
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Old 10-21-2016, 01:23 PM   #19
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---------- Post added at 10:23 AM ---------- Previous post was at 10:19 AM ----------

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Old 02-21-2017, 02:51 PM   #20
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Evidence for the existence of the planet no one has yet been able to find continues to mount.

Planet Nine breakthrough as astronomers find asteroids that may have been victims of a 'smash and grab' by mysterious body
Quote:
Study investigated orbits of two distant asteroids, 2004 VN112 and 2013 RF98
They have nearly identical orbits, and researchers say may have common origin
The study suggests they were pushed into present orbit by more massive object
This supports existence of hypothetical planet, 'Planet Nine,' in our solar system
http://www.dailymail.co.uk/sciencete...en-planet.html


The researchers found that the orbits of 2004 VN112 (blue) and
2013 RF98 (pink) are almost identical, and the poles are separated
by just a small angle. The hypothetical orbit of Planet Nine is
illustrated with the dotted line


If they never do find it I think a number of astronomers are going to have mental breakdowns...
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Old 04-03-2017, 01:05 PM   #21
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Have astronomers FINALLY found Planet Nine? Four candidates for the mysterious world are located
Quote:
Researchers in Australia led a citizen search for the elusive planet
Over four million entries were submitted - four of which could be Planet 9
The researchers will now confirm whether or not the unknown space objects are Planet Nine using telescopes from around the world
http://www.dailymail.co.uk/sciencete...9-located.html


The team of astronomers from The Australian National University
is investigating the four unknown objects, following the launch of
their planetary search on BBC's Stargazing Live, presented by
Professor Brian Cox (pictured centre), and Dara O'Briain (pictured
fourth from left)


Quote:
A team of astronomers from the Australian National University (ANU) is investigating the four unknown objects, following the launch of their planetary search on BBC's Stargazing Live, presented by Professor Brian Cox, and Dara O'Briain.

They said they will reveal more details about the mysterious objects once they have investigated them

Dr Brad Tucker, lead researcher, said about 60,000 people from around the world had classified over four million objects in space, as part of the citizen search for Planet Nine.
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