You are trying an ex cathedra argument, and that does not cut it in aerospace.

I simply pointed out to
you tat you don’t have a pilot’s licence and no hours.

Whatever your specialty is within astrophysics, it is clearly not comets. You also should be upfront and admit that your own observing needs are different and compete with those of NEO detectors for funding.

You want the truth? I have met and known far more capable astrophysicists than you, and none of them really had your own sense of self importance.

For that matter, I’ve met better physicists than you, and the same held.

As far as the 73P specialists go, to my knowledge you are not among them, they do not know you, and have never even heard of you.

Feed your ego by having the last word, since that seems more important to you than the truth. I’m tired of your blathering. Goodbye.

“any scientist studying these comets would undergo an extraordinary rise in their fame, influence, and career prospects if they discovered one of these comets was a major threat, or made themselves an expert on said threat”

Not within NASA. The NASA bureaucracy has core clients that they satisfy, and any money for a new hazard is expected to come from those core clients funding.

I could go into asteroid versus comet impact theories, and the perversion of science that took place in NASA,and the center fights, but that really deserves a book rather than a post.

Googaw, this is the same NASA that just wasted $9 billion dollars on the Ares 1 launcher. Clearly your assumption and assertion of rational actors at NASA does not hold, and thus your argument fails. And fails entirely and completely.

Where did you get your uniform 270 meter pieces from? From imagery analysis? I seem to recall that original diameter estimates ran from 1.1 to 1.4 to 1.7 kilometers.

Why do you assume that just because something is not visible to Hubble’s bins it is dust. Is it not true that smaller fragments outgas, and both the smaller and larger fragments outgassing is the same as if the all had small rocket engines? And thus one ends up with a rather long debris cloud instead of a point solution. Further, is it not also true that due to that future locations are impossible to predict accurately?
Even for Comet Halley, for example.

Finally, is it not true that 73P’s debris stream is currently at least 6 million kilometers long.

I just wan to state once again how happy I am with the low launch prices available now to US sat manfacturers.

There is critical research that needs to be done by NASA that I would like to see be done.

Quiet work and discussion among specialists is already underway. They really do not like to have their time wasted by the less than well informed. They also really do not want their work used by the various nuts out there.

Before the SLS booster competition, SpaceX was the only US firm working on re-usable fly-back first stages.