Five-planet Nice model distant massive ninth planet is responsible for the alignment of the perihelia of several trans-Neptunian objects with semi-major axes greater than 250 AU. Although the mechanism for the ejection of the fifth giant planet in the five-planet Nice model is reminiscent of the origin of Planet Nine, with a gravitational instability including an encounter with Jupiter, it is unlikely to be the same planet. The estimated timing of the capture of Planet Nine onto its distant orbit, three to ten million years after the formation of the Solar System, when the Sun was still in its birth cluster, is inconsistent
The Man from Planet X 11:00pm to rescue them. He sneaks up to the alien ship and learns from Mears that the spaceman intends to use its ship as a wireless relay station in advance of an invasion coming from the approaching planet, which we also learn is a dying world. Lawrence orders the enthralled villagers to leave and attacks the alien, shutting off its breathing apparatus, then escapes with Enid and the professor. Mears, however, returns to the spaceship and is killed when the military opens fire and destroys it, shortly before the planet is nearest Earth. No invasion happens and the mysterious Planet