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The solar system is really messed up (and it might mean Planet 9 exists)
The solar system is really messed up (and it might mean Planet 9 exists),Billions of years ago, when it was first emerging from clouds of gas and dust, the solar system was supposedly in order. Then gravitational forces threw everything off.

The solar system is really messed up (and it might mean Planet 9 exists)

Billions of years ago, when it was first emerging from clouds of gas and dust, the solar system was supposedly in order. Then gravitational forces threw everything off.