Planet Nine is a theoretical world hiding somewhere in the space beyond the Kuiper Belt at the far end of the solar system. Believed to be the ninth planet from Sun, no one has ever seen Planet Nine, but the planet is theorized to be 10 times larger than Earth. An unseen planet this big would explain why some Kuiper objects appear to clump together as though experiencing the gravity of a large planet. Planet Nine was first proposed in 2016 by astronomers at the California Institute of Technology (Caltech) and direct observations are still to be made.
But Caltech Professor Michael Brown, who originally came up with the Planet Nine theory, is certain astronomers are
And in a shocking announcement on live radio, Professor Brown has revealed he is pretty optimistic about knowing Planet Nine's orbit of the Sun.
Speaking to Linda Moulton Howe of Coast to Coast AM, the Planet Nine researcher said: "If we knew exactly where it was, we would not be inferring, we would just look at it and say 'Look there it is.'
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"We know what we know is its long-term gravitational effect on these other bodies. its orbit pretty well and we know the orbit pretty well b
"If it's too massive, it destroys the outer solar system. "So, all these details we can deduce from the detailed computer simulations we've been doing."
But even those approaches, Professor Brown said, has seven times the distance from Sun to Neptune
Because of the incredible distances involved, Planet Nine's gravity does not impact on any other planet, least of all Earth.
"So, having something less massive than Neptune seven times away, means that it is something like one percent of the effect of Neptune
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"And Neptune hardly affects Earth, so there's almost no effect at all and if there was an effect on Earth or on Earth's orbit, it would be a lot easier to find because we have measurements of that. "
According to the astronomer, Planet Nine follows an eliptic orbit far beyond the fringes of the Kuiper Belt
The Kuiper Belt itself is an area of space densely populated with rocky asteroids and other icy objects known as Kuiper Belt Objects (KBOs)
The Kuiper Belt is approximately 4,647,790,400 miles from the Sun.