Thousands of comets in just the right spot or tens of thousands of comets over a small area just for that star which seems contrived.
If you can create a credible reason why there might be a swarm of comets like this say as remnants from a collision between a large body with just the right orbit* then that's just 1 event which is more plausible.
*And I don't mean me saying it, actually create a model that would result in it based on you know math.
If you can create a credible reason why there might be a swarm of comets like this say as remnants from a collision between a large body with just the right orbit* then that's just 1 event which is more plausible.
*And I don't mean me saying it, actually create a model that would result in it based on you know math.