A copy from APOD text of 2005 05 16.
Is this prediction is inversed? The harder the commet is, the smaller the crater wiil be. Tell me if I am right or wrong.
Regards

That sounds about right to me.makc wrote:imagine liquid comet. there would be no crater at all.
I guess it is about how much of impact energy can be consumed for plastic deformation - if none, it would have to crack, leaving large crater.