OK, this is a totally off the wall question. I have been reading about trans-Neptunian objects and the small mini-planets that are found 35-45 au's out in the solar system.
So my question is: what if one of these bodies slammed into Neptune and ignited or caused an explosion of the hydrogen(80%) atmosphere of Neptune. I know it's not very likely, but I'm sure it would be visible from Earth. Would it have an impact on us other than a neat light show?