For what it's worth, a primordial black hole Planet 9 is the plot of Stephen Baxter's new book, "Creation Node," which was released about a week ago. (Well, it

For what it's worth, a primordial black hole Planet 9 is the plot of Stephen Baxter's new book, "Creation Node," which was released about a week ago. (Well, it's the seed of the plot, and then things take a few turns. It's an interesting book!) As an aside, it takes the first visitors about 30 years to reach it, and they've got better tech than what's available to us today. It's pretty far out.