You are busted spammer. You know it, I know it and everyone who drops in to read your insane blundering comments will see it too. No part of this debate has had me in any difficulty. Once again you are just too ignorant to understand that the impact is irrelevant, that it MUST have been caused by the underside and that the only dust disturbed is perpendicular to a pushed downward falling flat surface. The air displaced by this moves in the direction of the fall, with some minor spill to the sides. Ergo, if there was sufficient air displaced to cause a sideways disturbance, the masses of dust directly ahead would have been blasted all over the place! Troll. You aren't thwarting anything, you are busted and know it. It's pretty clear that you are a very dishonest person acting dumb and doing a rather good job of it. It's also very similar to conversing with a small infant. There is such a thing as deductive reasoning and you seem to have a complete absence of this basic and easily acquired skill. From the video we can see a number of things:- There is a plethora of dust. It is clearly and obviously covering most of the visible area. This is not up for debate, the film maker actually insists on it. The lid for the sample container box is pushed shut. Again not up for debate, clearly visible. It impacts the box and there is a small disturbance in the near corner. Again not up for debate, clearly visible. A descending flat surface displaces air as it falls. Mainly in the direction of fall, but also to the sides. Similar to the draft from a closing door. Irrefutable and obvious. There is not the slightest movement or displacement of any of the dust opposite to the direction the lid is falling. Nothing whatsoever! In a vacuum, there would be no displaced air and subsequently no displaced dust. This is what is observed. In a vacuum and low gravity, any impact vibrations would exaggerate the movements observed. It is completely and irrefutably irrelevant which part of the lid impacts the box. We know it does impact because it stops! Any lid falling onto a box must cause an impact force and it must be from the underside. Now from the responses being received from this serial forum spammer we can also see a number of things:- Clearly he is diverting attention from the obvious lack of frontal air disturbance that is 100% unavoidable. He keeps referring to the underneath impact point not being highlighted when it is 100% obvious this is how the collision works. It must be the underneath striking! This dishonest person will never concede the absolute obvious, he will obfuscate and divert but will never admit his errors. The footage presented has now 100% irrefutably shown that the small segment highlighted must be in a vacuum. It almost certainly must also be in low gravity from the absurdly unnatural way the dust moves. The forum spammer has shot down in flames his own 15 years spammed claim! Further, since we now have proven that this sequence is in a vacuum, so must be the footage before and after this section. It's on the Moon.