Looking for a "mainstream" explanation for gamma gays and nuetron capture signatures. One of Elizabeth's homework problems got me to thinking: Now if Elizabeth is reading this thread, please note that the "correct" answer (in mainstream thinking today) is probably a). However: http://svs.gsfc.nasa.gov/vis/a000000/a002700/a002750/ Why wouldn't those neutron capture lines and those gamma ray signatures we observe in the solar atmosphere be evidence for some kind of fusion process occurring in the solar atmosphere? In other words, in light of those million degree coronal loops in the solar corona, how does the mainstream decide that fusion is limited to only occurring *inside* of the sun? What would these energy signatures represent in mainstream thinking if not some sort of P-P (or other) fusion process? I'm not really looking to argue any particular point here, I'm instead trying to understand how the mainstream is certain that solar fusion is limited to the core of a star?