After a computer crash and a vacation...I can share some discussion with my genious step brother. He is being paid by Purdue to study Gamma ray bursts using the varitas telescopes on the same mountain that the wipple observatory is also located on, south of tucson....do your research I provide no links... I asked him about how much the human mind REALLY understands astronomy...he said we do not understand 97 percent of it! We have little proof of dark matter...it shows up in equations...but even gamma rays can BARELY pick it up...the best images are poor to say the least. I saw them on his computer...pretty lame... I could go into depth why...(the receptors that feed into the camera of veritas are 30 years old...i think, I could be wrong...) ps...look up veritas!