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Are We About to Discover a Ninth Planet . . . Again?

We’ve been discovering the ninth planet for almost 200 years now. What makes this time different?

Yet this isn’t the first time we’ve thought we found a ninth planet.

The search for Planet X didn’t end with Lowell’s death though.

But the search for Planet X didn’t end there.

But that didn’t mean there was nothing to find out there on the edges of our solar system.

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