What happens if the planet Pluto blows up?

Answer 1

It depends on where it is when it blows up, and the trajectory of resulting chunks. If Pluto is at the end of its orbit farther from the sun, then it isn't likely that there would be any bad events following its demise. Most of the chunks would just become part of the asteroid belt that Pluto spends a lot of time in. Of course, it would be bad news for all the Plutonians living there... There would be an extremely small probability that a chunk would head toward earth, but any such chunk would have to pass reasonably near the orbits of several other planets. If the planets were nearby as chunks pass, this would decrease the chance of an earth collision; the other planets would tend to capture most such chunks. Even our moon offers a little protection.