The Evidence for Planet Nine’s Existence I NOVA I PBS
hiJxgfBVGr8 • 2019-06-27
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Kind: captions Language: en [Music] everything that planet 9 does to our solar system is done by gravity so it's the gravitational influence of Planet 9 that we are basically reading it here what we see in purple these are the huge orbits of the distant Kuiper belt objects they all kind of lie in the same plane they're all arranged into the same overall directions so that something is gravitationally shepherding them them this object is planet nine [Music] standing up and saying we think there's a ninth planet is a pretty dramatic thing to say and if we were going to say that we didn't want to be bald in fact since the time even of Percival Lowell and even earlier people have been talking about new planets and new planets and new planets and they're always wrong 450 years if you stood up and said I think there's a new planet you were wrong Planet 9 and the most sort of surprising thing it tilts the entire solar system by about six degrees with respect to the Sun Planet nine could very naturally explain yet another population of distant bodies that planet 9 predicts is objects called centaurs that orbit out of the plane of the solar system they're perpendicular to the planetary orbits the fact that these objects have been observed and they really are there is one of the strongest lines of evidence we have towards the true existence of Planet 9 itself there is now a laundry list of things that Planet 9 does that we see it is inconceivable to me that there is not a Planet nine out there there are just too many things that were previously unexplained the Planet nine naturally explains [Music] [Applause] the astronomical confirmation of the existence of Planet 9 would be the first real expansion of the Suns planetary album in a hundred and seventy years it would completely redefine our scale of what the solar system really [Applause] [Music]
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