It explicitly says sRGB which has commonly agreed white spot of 6500K. And thus it's reasonable assumption that photo of neutron star displayed on common monito

It explicitly says sRGB which has commonly agreed white spot of 6500K. And thus it's reasonable assumption that photo of neutron star displayed on common monitor would have such color. Infinity is a well understood mathematical construct. I don't know what is the issue with evaluating limit value of some function, in this case color, "at infinity"? Nowhere it says it's physically possible.