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    We May Have Found The Hypothetical Planet 9!

    We May Have Found The Hypothetical Planet 9! Before the 20th century, we had a pretty good theory that explained a bunch of stuff. It...

    We May Have Found The Hypothetical Planet 9! Before the 20th century, we had a pretty good theory that explained a bunch of stuff. It explained the motion of the planets around the Sun (specifically, it explained why planets follow an elliptical path). This was the Newton theory. Among other things, it showed that humans...