This story was originally podcast as a part of SpaceTime with Stuart
Gary Series 19 Episode 74.
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More evidence for a ninth planet on the edge of our solar system
The yet to be discovered Planet Nine -- which may lurk beyond Neptune
on the dark outer rim of our solar system – could explain the
mysterious six degree difference between the Sun’s equator and the
ecliptic or average orbital plane of the planets. The new findings
provide astronomers with their first compelling evidence to explain the
unusual wobble of the planets with respect to the Sun’s equator.