I understand that within the polar "circles, " much of the time the moon is not visible at all.
Seems likely. On the other hand, during the Arctic night I suppose it could be visible for days at a time.
Cecil speaks: Why does the moon look different near the equator?
Also, I had an Australian friend who, when he visited me, said the moon was upside-down where I was.
I’m such a blockhead that I had to draw myself a picture to visualize this. It only made sense to me when I realized that, duh, it’s not the moon that’s upside down when I’m in the southern hemisphere, it’s me.
Not that outmoded - what do you mean by the “dark web” or “dark pool” trading?
But “dark side of the Moon” literally means the dark side of the Moon.
This makes it crystal clear. Thanks.
Although you’d think someone who can travel from Mars to Earth would be advanced enough to already know this… 
And this is proof positive of my long contention that everyone and everything in the southern hemisphere is upside down. You’d think they’d get dizzy after a while, but apparently they’re used to it. 
Those Asians sure are silly.
I mean, it’s *obviously *playing the bongos.
That’s the same effect, seen the same way. To elaborate:
Most people think of the sky as shaped like a dome or inverted bowl. The only semi-regular structures we ever see in the sky are clouds, which are pretty low down: Clouds near the horizon are much further away than clouds directly overhead. Thus, we think of the dome of the sky as a whole as being much wider than it is tall, and correspondingly, of celestial objects near the horizon as being much further away than those directly overhead. Our brains naturally correct for this effect. But the Moon always presents the same angular size to us, so when the brain “corrects” for the “different distance”, it assumes that the Moon on the horizon (which is far away) must be larger than the Moon directly overhead (which is close).
It is. In the same way all rivers run south, and earth is a time cube.