Note: Origin knows that F = qV x B, so the quantity of particles is not the only factor, but their velocity. He also knows related principles, like Coulomb's law, which shows how the electric force between charges relates identically to that of the propagation of the gravitational force between two masses. This is freshman math and science, nothing special. But this is why he's bringing it up. Nature follows laws, and the laws that predict what Voyager is detecting are the reason NASA put the detectors on board and waited 35 years to get the data. So? What does that mean to you? Hahaha. Back to square 1. Let me try to paint you a picture: Please Register or Log in to view the hidden image! What you are seeing is not aether, but the particles of Orion Nebula. The crescent shape around the bright object is its heliosphere--its magnetic field being blown outward by its particle emissions. That field is "piling up" as the "pressure" from all the stuff in the nebula (that happens to be racing towards it) "pushes" back the the other way. Another word for "piling up" is bow shock. As you can plainly see, there are no shortage of particles, as you seem to think. Look at the photo and tell me what the interstellar medium is composed of. Is that what the photo shows?