No they don't end because they represent mountains or hills which are circles (they go on forever)
They do not end
no
no
For now, it isn't clear whether there such a thing as the "edge of the Universe" even EXISTS.
Edge
yes 2010
'Blunt the edge ever so slightly' is the equivalent to ' Dull it down a little bit' meaning to tone down your current action.
Yes
9 times
i think they came at the edge fest.
yes
nope