re: Scientists Release Incredible Image of a Four Planet System

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I know it's garbage but maybe our ancient ancestors did indeed witness another body in the heavens.

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Sorry to throw reductionism at you but it's unlikely that even primordial life was around when Planet 9 was cast out of a closer orbit of the sun*. The solar system is estimated to be 4.54 billion years old and the oldest evidence for life is approximately 3.8 billion years.

The 754 million year difference is plenty of time for the planetary gravitational battle that ejected Planet 9. Actually, it probably occurred very soon after the planets coalesced and began asserting gravity in their neighborhoods.

*If further evidence shows that Planet 9 was actually ejected from a closer-in orbit and not captured as a rogue planet from another solar system.