'Planet Nine' Could Be an Alien Intruder

New dynamical simulations suggest that the mysterious unseen world might be an interstellar rogue that was captured by our solar system.

There are few solar system mysteries quite as compelling as "Planet Nine." The hypothetical world, thought to be orbiting at an extreme distance

By Ian O'Neill seeker.com 1-13-17

from the sun, has some observational evidence that supports its existence. But as it is so far away and therefore so dim, it's not very easy to actually directly observe it.

Calculated to scoot as far away as 1,000 AU from the sun (when 1 AU, or astronomical unit, is the average distance at which the Earth orbits the sun), there's a huge question mark hanging over how it even formed - it had to have evolved far closer to the sun and then some gravitational process migrated it away. This extreme orbit has led to other ideas that Planet Nine might have been pilfered by our sun when it passed close to another star system in the past.

But there's an alternative hypotheses that suggests Planet Nine is actually an alien intruder; a captured "rogue" or orphaned planet that was adopted by the solar system.

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Aliens Previously Populated Our Solar System?

Astrophysicist: ETs May Have Already
Lived and Died In Our Solar System

The big question: Did they leave artifacts behind for us to find?

As science continues to search the cosmos for evidence of intelligent extraterrestrials and, at the very least, for habitable planets that might harbor even non-intelligent life, one scientist is raising another eye-opening question: Was there a time in the far distant past when an advanced civilization actually lived on one of the planets of our solar system, long before earthlings evolved? Pennsylvania State University astrophysicist Jason T. Wright suggests that ancient aliens may have lived on nearby planets hundreds of millions of years ago, before vanishing without a trace.

By Lee Speigel The Huffington Post 5-5-17

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'Unknown Objects' Could Be Planet Nine

Astronomers have been hunting for Planet Nine — the large, mysterious body thought to lurk at the edge of our solar system — ever since researchers at Caltech published evidence of its existence last year.

By Sarah Kaplan The Washington Post 4-4-17

Ordinary people have now joined the search. And they've made some intriguing finds.

Participants in a citizen science campaign hosted by the crowdsourcing program Zooniverse, and the BBC pinpointed four previously unknown objects in the outer solar system that could be candidates for Planet Nine, according to researchers at the Australian National University.

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Mysterious ‘Planet Nine’ Causing The Solar System To Wobble?

“Because Planet Nine is so massive and has an orbit tilted compared to the other planets, the solar system has no choice but to slowly twist out of alignment...”

Astronomers can't see “Planet Nine.” But it makes its presence known. The massive hypothetical object, which supposedly looms at the edge of our solar system, has been invoked to explain the strange

By Sarah Kaplan The Washington Post 10-20-16

clustering of objects in the Kuiper belt and the unusual way they orbit the Sun.

Now Planet Nine predictors Konstantin Batygin and Mike Brown of Caltech, along with graduate student Elizabeth Bailey, offer another piece of evidence for the elusive sphere's existence: It adds “wobble” to the solar system, they say, tilting it in relation to the sun.

“Because Planet Nine is so massive and has an orbit tilted compared to the other planets, the solar system has no choice but to slowly twist out of alignment,” lead author Bailey said in a statement.

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Mysterious 'Planet Nine' Tilted Our Solar System?

Two recent studies have shown that the existence of a mysterious, hypothetical Planet Nine could explain why the planets in our Solar System don't fully line up with the Sun.

JOSH HRALA www.sciencealert.com 7-20-16

Researchers have been speculating about a ninth planet since January this year, and these latest studies add more weight to the hypothesis that, at some point in time at least, there was an extra planet orbiting our Sun.

In fact, if Planet Nine does exist (or did), it would help to explain something that scientists have puzzled over for decades - why the Solar System is tilted.

What does that mean? ...

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By Seth Shostak
The Huffington Post
1-21-16

      It could be the first new planet discovered in the last 170 years -- or at least the last 85, if you're one of those stubborn folk who still insist on calling Pluto a planet.

Two Caltech astronomers, Mike Brown and Konstantin Batygin, have noticed some weird behavior in the outer solar system they think is caused by an unseen world orbiting roughly 500 times farther from the Sun than Earth does.

The evidence consists of a strange alignment of some so-called Kuiper Belt objects (KBOs) -- ice-bound orbs that are cousins of Pluto. These oversized hailstones are strewn throughout the dim and distant nether regions of our solar system. Their discovery almost a decade ago led to Pluto's loss of membership in the pantheon of planets. [...]

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By Joel Achenbach and Rachel Feltman
The Washington Post
1-20-16

     Astronomers at the California Institute of Technology announced Wednesday that they have found new evidence of a giant icy planet lurking in the darkness of our solar system far beyond the orbit of Pluto. They are calling it "Planet Nine."

Their paper, published in the Astronomical Journal, describes the planet as about five to 10 times as massive as the Earth. But the authors, astronomers Michael Brown and Konstantin Batygin, have not observed the planet directly.

Instead, they have inferred its existence from the motion of recently discovered dwarf planets and other small objects in the outer solar system. Those smaller bodies have orbits that appear to be influenced by the gravity of a hidden planet – a "massive perturber." [...]

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New Planet Discovered in Our Solar System

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Dwarf planet discovered at solar system's edge

By Elizabeth Landau
CNN
3-27-14

     (CNN) -- For anyone holding out hope of Pluto being reinstated as a major planet, you should probably do as they say in the movie "Frozen" and "let it go."

But here's a new exciting find from the far reaches of our solar system: Astronomers have discovered a dwarf planet that's even farther away than Pluto -- so far, in fact, that its orbit reaches into a new edge of the solar system.

The dwarf planet's current name is 2012 VP113, and it is located in a "wasteland or badland of the solar system," said astronomer Chad Trujillo, head of adaptive optics at Gemini Observatory in Hawaii and co-discoverer of this object. His study was published Wednesday in the journal Nature.

"The big question is, how is this formed? How can you get an object out there?" he said. "We really don't know an answer to that yet."

This dwarf planet is unusual because of its orbit, Trujillo said. On its elliptical path, the closest it ever comes to the sun is still very far away from the rest of the solar system. Its full orbit is farther than the orbit of any other object we know of in the solar system.

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NASA's Voyager 1 Spacecraft Encounters Unknown Region Of Space

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By ALICIA CHANG
The Huffington Post
6-27-13

     LOS ANGELES -- New research pinpoints the current location of NASA's Voyager 1 spacecraft: It's still in our solar system.

Since last summer, the long-running spacecraft has been exploring uncharted territory where the effects of interstellar space, or the space between stars, can be felt. Scientists don't know how thick this new found region in the solar system is or how much farther Voyager 1 has to travel to break to the other side.

"It could actually be anytime or it could be several more years," said chief scientist Ed Stone of the NASA Jet Propulsion Laboratory, which manages the mission.

Stone first described this unexpected zone at a meeting of the American Geophysical Union last year. A trio of papers published online Thursday in the journal Science confirmed just how strange this new layer is.

Soon after Voyager 1 crossed into this region last August, low-energy charged particles that had been plentiful suddenly zipped outside while high-energy cosmic rays from interstellar space streamed inward. Readings by one of Voyager 1's instruments showed an abrupt increase in the magnetic field strength, but there was no change in the direction of the magnetic field lines – a sign that Voyager 1 has not yet exited the solar system.

Voyager 1 and its twin, Voyager 2, were launched in 1977 to visit the giant gas planets, beaming back dazzling postcards of Jupiter, Saturn and their moons. Voyager 2 went on to tour Uranus and Neptune. After planet-hopping, they were sent on a trajectory toward interstellar space.

Voyager 1 is about 11 1/2 billion miles from the sun. Voyager 2 is about 9 1/2 billion miles from the sun. The nuclear-powered spacecraft have enough fuel to operate their instruments until around 2020. . . .

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Voyager-1 Approaches Where No Spacecraft Has Gone Before — The Edge Of The Solar System

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By Tom Spears
The Ottawa Citizen
6-6-12

     OTTAWA — New evidence from NASA suggests Voyager-1, launched in 1977, may finally be leaving the solar system — something no spacecraft has ever done.

For more than a month, the space environment around Voyager-1 has been changing. The little spacecraft is being hit by increasing numbers of high-energy particles, suggesting it’s in a region outside the sun’s influence where there are more cosmic rays.

Our sun sends out particles called solar wind that continue far past the most distant planets. It also has an enormous magnetic field. Astronomers generally define our solar system as the area where the solar wind and magnetic field extend.

NASA has been estimating for years that Voyager-1 will reach the edge of the solar system around 2014. It is 17.9 billion kilometres from Earth, just over 120 times the distance from the Earth to the sun.

Data from NASA’s Goddard Space Flight Center show that for most of the past year, Voyager-1 was being hit an average of 1.7 times a second by high-energy particles such as protons. Around the beginning of May, that rate started climbing steadily. It’s about two particles per second now.

The implication is that more cosmic rays are hitting the spacecraft because there’s less solar influence to deflect them, “in which case Voyager-1 has reached the magnetopause boundary (i.e. where the magnetic field ends) and thus the boundary of the Solar System,” astronomer Nick Suntzeff of Texas A&M University wrote in an email. . . .

. . . More


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