Book 16 in this new series sees the young inventor presented with a problem that may or may not happen in a locale so far away it could be meaningless.Or, it could turn deadly!Haley's Comet is swinging back in for its next appearance, only this time it will pass very close to a newly identified planet far outside the orbit of Pluto. Eris is larger than Pluto and even possesses a small moon. So, with the possibility that Eris could influence Haley's trajectory, and if it goes one way it will come too close to the Earth on its pass in a few years, Tom must find a way to get out that far, and fairly quickly.His solution. Simple. Harness a black hole, ride it out past the edge of the solar system and see what happens.Only themission becomes much more diffecult when Haley's smashes into Eris and the planet begins to break up.Now, there will be far more potential deadly pieces of the former planet to deal with unless Tom and his crew can find a way to rebuild it.