The Webb telescope is showing us ever-more remote places, but there's no sign that anyone is looking back at us.
Asimov also talked of Tachyon systems and hyper space where travel at more than light speed would be possible. Buy there are many problems explaining that in terms of theory of relativity.
Your micro travel and fog unification is very interesting, at least for writing fiction, if not really plausible too.
Excellent. Very thought provoking