[There's a little click of his tongue and a brief nod to concede her point.]

Well, yes, that's also entirely possible. We were quite a few centuries out from the first colonization of other planets but you may be further than we are. [He continues to look contemplative.] I suppose if you're not particularly familiar with Earth's solar system, then you might not have heard of - or been taught - of the war between the solar planets and those on the outer rim of the galaxy?

[It's a recent past, for Peter's world.]