Over the years there have been suggestions of using “lithobraking” as a means of reducing the cost of transporting payloads to the lunar surface. As the name suggests, the idea is to use the lunar surface itself – the lithosphere – to slow the craft. Meteoroids do this all the time, of course, though in their case it’s pretty destructive. But for those rare serious suggestion of using lithobraking, the idea would be to lay out a miles-long “track” of smooth lunar dust; the spacecraft would come in at a *very* shallow angle and touch down at extreme – essentially orbital – velocity, and use skids to brake using friction. The precision required, and lunar infrastructure required, would be pretty substantial. One early suggestion of what a lithobraking spacecraft might look like is this (from HERE):

It might be workable. But it’s not something I’ve seen demonstrated too often, either practically or in animated form. Well, until now. At last, we have a good video representation of what lithobraking might look like in actual practice:

 

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