Okay, once again, I'm wondering how to handle space trivia in a sci-fi story (the same one as before).
In the scene, there's an ongoing dialogue (as usual) with a bunch of different people who already know this stuff, so there's little cause for one to define anything for anyone else.
How safe is it to drop terms like Heliosphere and especially heliopause without losing readers? I'm assuming most can easily look up heliosphere, but there just aren't as many references to heliopause. The dialogue puts the usages into context (i.e. ships must exit the heliosphere in order to engage their faster-than-light engines) but they don't define the actual terms themselves.
Any ideas, concerns or suggestions?
By the way, this is mainly coming up because I needed a synonym for "at the edge of the heliosphere", and not finding any, simply specified "at the heliopause".