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Old 09-27-2019, 12:59 PM
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Arrow Planet 9, our solar system's mysterious missing world, could be an ancient black hole

Planet 9, our solar system's mysterious missing world, could be an ancient black hole orbiting the sun, a new paper suggests
By: Morgan McFall-Johnsen - Business Insider - 9-27-19 1-hr ago
RE: https://www.businessinsider.com/plan...ing-sun-2019-9

Computer-simulated Image link: https://image.businessinsider.com/5d...jpeg&auto=webp
This computer-simulated image shows a supermassive black hole at the core of a galaxy. The black region in the center represents the black hole’s event horizon, where no light can escape the massive object’s gravitational grip. NASA, ESA, and D. Coe, J. Anderson, and R. van der Marel (STScI)

- In 2016, researchers suggested that the bizarre orbits of six objects in the solar system's Kuiper Belt could be influenced by the gravity of a mysterious, distant planet that scientists had never seen.

- A new study suggests that this mysterious Planet Nine, which seems to lurk at the edge of our solar system, could be a primordial black hole from the birth of the universe.

- The black hole could have roughly 10 times Earth's mass and be the size of a bowling ball.

At the edge of our solar system, some unknown object is manipulating the paths of chunks of ice as they circle the sun.

These objects' oval-shaped orbits all point in the same direction and tilt the same way, suggesting that an unseen force is herding them.

At first, scientists thought the culprit was a mysterious planet, which they dubbed Planet Nine (though some call it Planet X). But a new paper suggests the gravitational pull could come from a primordial black hole — a type of small black hole that scientists have theorized formed during the Big Bang.

Although the existence of primordial black holes has not been confirmed, some scientists think the universe is teeming with them. If they exist, such black holes could make up the 80% of the universe that scientists can't see. They know this "dark matter" exists because its gravity pulls on things throughout the universe.

A new paper posted Tuesday on arXiv, an online repository for research that has not been peer-reviewed, suggests that Planet Nine could be one of these ancient black holes, roughly 10 times Earth's mass and the size of a bowling ball.

The researchers propose new ways to hunt down this mysterious missing piece.

"Once you start thinking about more exotic objects, like primordial black holes, you think in different ways," James Unwin, a theoretical physicist and co-author of the paper, told Gizmodo. "We advocate that rather than just looking for it in visible light, maybe look for [Planet Nine] in gamma rays. Or cosmic rays."

Planet 9 explains distant objects' weird orbits

At the fringes of our solar system are thousands of small, icy bodies that make up a region astronomers call the Kuiper Belt. Six of those objects appear to have bizarre orbits that indicate some unknown source of gravity is tugging on them.

In 2016, computer simulations and mathematical models revealed that the culprit could be a mysterious, distant planet we've never seen: Planet Nine.

Map link: https://image.businessinsider.com/5d...jpeg&auto=webp
The orbits of six distant objects in the solar system (in magenta) all mysteriously line up in a single direction. A planet with 10 times Earth’s mass (orbit in orange) could explain this configuration. Caltech/R. Hurt (IPAC)

In that study, planetary scientists Konstantin Batygin and Michael Brown calculated that Planet Nine's gravitational pull means it could have up to 10 times the mass of Earth.

On average, the mysterious body orbits the sun at a distance 20 times farther than Neptune — about 18.6 billion miles. It could take between 10,000 and 20,000 years for it to complete one trip around the sun. (Pluto, by comparison, takes 248 years to complete its orbit.)

Batygin and Brown suggested that Planet Nine could have formed in the same way as the gas giants we know well —Jupiter, Saturn, Uranus, and Neptune — starting as an ice core then grabbing all the gas around it.

Photo link: https://image.businessinsider.com/5d...jpeg&auto=webp
An artist's impression of Planet Nine, with the sun in the distance. Caltech

Planet Nine may have gotten too close to Jupiter or Saturn, they suggested, and been flung out to the edges of the solar system, where it now follows an eccentric orbit and influences the Kuiper Belt objects.

Since the mysterious world exerts such a powerful gravitational force on a large region of the solar system, Brown called it "the most planet-y of the planets in the whole solar system."

But that may not be the case.

More summations on this subject can be found on this link you may also find interesting.
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