Image credit: Wikimedia Commons user Alexander Meleg, under a c.c.a.-s.a.-3.0 license.

How far is the Universe’s most distant galaxy?

And how close does the farthest one we’ve ever found so far come to it?

“Science, however, gives me the feeling of steady progress: I am convinced that theoretical physics is actual philosophy. It has revolutionized fundamental concepts, e.g., about space and time (relativity), about causality (quantum theory), and about substance and matter (atomistics), and it has taught us new…