Comment by saltcured

Add a slight trailing decay and I think the basic arrow motif could be intuitive for trajectory for any observer who experienced aerodynamics?

Whether it is the evolved shape of a flying creature or an abstract depiction of a meteorite (or even a comet!), there is a kind of intuition about the sharp end and the flaring of air or fluid around it, with some sort of trailing tail from whence it came...

One can imagine many observers who could find our space probes would also have some of these experiences?

Of course, all of this assumes some kind of visual perception and cognition to even recognize the plaque as having markings made with an intent to communicate some abstract ideas...