Dannei

On point 4, why couldn't you travel via Canada? Too remote (I doubt it!), no passport, tourist visa restrictions that wouldn't let you travel on foot for so long, or something else?

Physics is to Psychics as Astronomy is to Astrology.

This tells us that the metallicity of the stars that formed the black holes must have been much less than the solar metallicity.

From the page linked, the progenitor metallicity does indeed seem to have been very low! Considering that this event occurred only ~1 billion years ago, that value is actually surprisingly low, unless the black holes had been around for a very long time before merging. Is it likely that they would have survived several billions of years before a merger?

Do gravitational waves experience normal wave effects such as reflection, refraction, and diffraction? If so, are these effects likely to be large enough to be detectable with aLIGO?

Is suing someone's descendants in that fashion legal in the US? Firstly, I struggle to see how you could take the deceased defendant to court. Even if you did and won, their estate has long since distributed their assets, and at that stage there's nothing left that's owned that you could sue them for.

(I'm sure I've asked this before about debts in the US, and have been told that one can claim from the estate, but not any inheritors)