06-04-2022, 09:53 PM
Just posting a bit of an update to this.
One of the main pieces of evidence was a mathematical simulation of the early Solar System, which showed that the motion of planets might have been best explained if there was a fifth gas giant (which, in some simulations, was ejected out into space). However, that model has been refined - and it now works equally well with either four or five gas giants (and, if anything, it works slightly better with only four):
https://www.inverse.com/science/nice-model-planet-nine
Doesn't kill the idea of 'Planet Nine', but it does make the case for it a little less compelling. (Although, if it was ejected from the Solar System, I wonder where it is now - and whether we'll ever find it?)
One of the main pieces of evidence was a mathematical simulation of the early Solar System, which showed that the motion of planets might have been best explained if there was a fifth gas giant (which, in some simulations, was ejected out into space). However, that model has been refined - and it now works equally well with either four or five gas giants (and, if anything, it works slightly better with only four):
https://www.inverse.com/science/nice-model-planet-nine
Doesn't kill the idea of 'Planet Nine', but it does make the case for it a little less compelling. (Although, if it was ejected from the Solar System, I wonder where it is now - and whether we'll ever find it?)
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