The struggle to sample the whole spectrum continues. Super high energetic photons beg explanation and i would like to know if any are produced locally at all. If not then we are thrown back on the likes of black holes. I would like to see if they correlate to Quasars.
I also need to see if we can make these types of photons ourselves. That usually leads to a clearer understanding.
Otherwise a neat advance that continues to fill in our spectrum.