Planet Nine Might Be a Black Hole the Size of a Baseball

Tiny black holes are thought to speckle the universe, and new research posits the solar system may have captured one. (Credit: nagualdesign/Tom Ruen/Wikimedia Commons)Something strange may be lurking in the outer solar system. The odd orbits of distant space rocks suggest there’s a giant, elusive world dubbed Planet Nine waiting out there to be discovered. But now, in a new research paper, a team of scientists suggest something far stranger may be influencing the orbits of these distant wo