I don't think it would be impossible. [Where there can be transfer in one direction there can usually be transfer in the other direction as well. That's a large part of what an understanding of wormhole physics provides.] Perhaps very very difficult, and certainly beyond me, but that's not too surprising.
Vorpatril. My family name. I'm from Barrayar. [He says that like it explains his name, inasmuch as an explanation is needed. He's still not used to the fact that for most people it doesn't.] But you can just call me Ivan, of course.
[video]
Vorpatril. My family name. I'm from Barrayar. [He says that like it explains his name, inasmuch as an explanation is needed. He's still not used to the fact that for most people it doesn't.] But you can just call me Ivan, of course.