|Reflection Check: Isolated Craters|
|Isolated craters are those which, at the most, make slight contact with another crater but not enough to disturb complete circularity.|
|The upper crater could be considered isolated.|
|You'll see fingers extending beyond the rim of the upper left crater and they match closely the ends|
|The rays in the interior are of particular interest.||of the fingers in the image below.|
|Looking down the barrel of a plasma focus device. Note the similarity to the interior radial features in the planetary craters and the CRT, crater-like, features|
With these comparisons i am led to think that brief discharges, not unlike those in CRT experiments, have a role in crater formation, along side or simultaneous to sustained Electrical Discharge Machining.