One thing I've learned today, after 11 hours of posting in this thread, is that it's easy to look at an article in isolation and say "Really? That got moderated?" - when in fact if you know the larger context there's nearly always a straightforward explanation.
One can certainly argue that 86 points and 46 comments is too low a threshold to treat the repost as a dupe, but that's a different question, no?
Really? A NASA report, on the official .gov site? Maybe the comments were horrible but that seems right in the middle of what HN is interested in.