NASA System Predicts Impact of a Small Asteroid over Germany - https://news.ycombinator.com/item?id=39126705 - Jan 2024 (18 comments)
It was downweighted because it was a dupe (or quasidupe) of this:
Scientists discover near-Earth asteroid hours before it exploded over Berlin - https://news.ycombinator.com/item?id=39103412 - Jan 2024 (46 comments)
That's the system functioning as intended. We work hard to try to prevent repetition from taking over the site, because repetition is the enemy of curiosity (https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...).
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.