Earlier quoted context omitted.
a priori - from before, not based on prior study I use it here in the same sense as "an a priori estimate" as opposed to the more common logical use of something being apparent without requiring study but only the application of reason. I take it you're more a logician than a Latin student. If the later then I guess you'll probably correct me? Are you sure now, let me know. -- Aside I've had chance to read teh articl…
Aside I've had chance to read teh article and there was no mention of taking near-IR images at day and night. So presumably it's my language use that's getting me heavily downmodded? Actually I think you were downmodded for not reading the article and then asking a question that could have been answered by reading the article.
Except I read the article and watched the video and neither answered the question ... so if any of these people had read it they would have known the article didn't answer the point. So it's just pettiness?
IMO part of the benefit of social media such as this site is that others are willing to digest news and information to enable one to get a quick overview of a topic.