Planet Nine BREAKTHROUGH: Evidence of mystery planet bigger than Earth GROWS
Although Caltech astronomer Mike Brown admitted his latest paper does not prove Planet 9’s existence, he added: “It does indicate the hypothesis rests upon a solid foundation.”
Other astronomers have gone further, calculating the likelihood of Planet 9 not existing as only 1 in 500.
If real, Planet 9 is estimated to be about five to 10 times the mass of Earth, possibly making it similar to super-Earth-type exoplanets – larger than Earth but smaller than Neptune.
If Planet 9 exists, it will most likely travel on an elongated orbit, taking it up to 400 times the distance of Earth from the sun.
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