The Atlantic

Planet Nine, Show Thyself

Astronomers have found tantalizing new evidence that strengthens the case for a ninth planet beyond Neptune—but some still doubt its existence.
Source: NASA / Johns Hopkins University Applied Physics Laboratory / Southwest Research Institute

In 2016, when astronomers made the case for a ninth planet, orbiting far beyond Neptune, that could explain a strange clustering of objects in the outer reaches of our solar system, they were hopeful it would be found in less than five years.

The search is more than two years in now. “Planet Nine,” thought to be 10 times the mass of Earth, has yet to show itself, but the planet hunters have just found a new clue.

Astronomers have an object beyond Neptune with quite a different orbit compared to the rest of the solar system, according to a paper on . Nearly all of the inhabitants of our system orbit on the same plane, giving it the appearance of a pancake.BP, is highly tilted. Its orbit juts out 54 degrees above the plane of the solar system. Which makes it quite remarkable.

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