Man, this stuff is cool: the early Voyagers are reporting from the Heliosheath - the turbulent weirdness of the outer membrane of the solar system, where the solar wind runs out of gas & slabs up against the interstellar environment. I never thought of that chunk of reality as being much more than a good deal less than the usual not-very-much, but apparently it's a complex and strange nothingness about which Voyager 1 & 2 are proving that we know even less than we thought we did.

I gotta say, though - if Voyager 1 hits a crystalline wall & goes smash - everybody duck!

H/T Robert A. Hahn on RedHot.