Astronomers see more signs of Planet Nine

Planet Nine

An artist’s conception shows Planet Nine with the sun in the far background. (Credit: R. Hurt / IPAC / Caltech)

Astronomers haven’t yet seen Planet Nine, the theoretical world that some say lies far beyond Pluto’s orbit, but they’re seeing more phenomena that could be explained by its existence.

Today, astronomers laid out evidence that the undiscovered planet may be responsible for twisting the main plane of our solar system about 6 degrees off-kilter with respect to the sun.

In a paper accepted for publication in the Astrophysical Journal, astronomers say Planet Nine’s gravitational influence could disrupt planetary orbits to account for that much of a tilt.

Get the full story on GeekWire.

About Alan Boyle

Aerospace and science editor for GeekWire, creator of Cosmic Log, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.
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