-whatever it is that's… Yes, I don't either, but something's making her gaps in horror like that. Relaxing slightly, I walk cautiously towards her.
"Luna?"
Best to move slowly. Equines don't deal well with quick movements or loud noises,
whatever their form...
She shakily raises her right arm, pointing into the… Sky. At the clearly visible moon in the day sky.
"Ah."
Ah... Oh, the
madness. I imagine this would only occur on Equestrian by accident, or if Luna was feeling a bit vexed by her sister.
I walk around behind her, wrap my right arm around her chest and my left hand over her eyes like a living blinker.
"It's alright, it's alright. It's meant to do that."
Hmm... Would this be a bad time to cop a feel?

Just to shock her out of her surprised state. It's not like her slap would
hurt him, after all.
"Daddy?" Sarah trots walks over with her ball. "What's wrong with Princess Luna?"
"She's had a bit of a shock, but she'll be fine in a moment. Why don't you go and play with Clare while she recovers?"
Oh, don't think we didn't notice
that little moment of self-correction, Renegade. I guess there's a
few words he avoids using, even in his inner monologue, since he met the Ponies, unless they're
actually appropriate...
Sarah walks closer, then reaches up to pat Luna on the left thigh with her right hand before turning and running towards her sister. Through my right arm I feel Luna's breathing rate drop down to something more like her resting rate as she leans back into me.
"Feeling better?"
Ah, small children. Such a
calming influence.
"The moon is raised!"
"Earth orbits its star, while its moon orbits the Earth. As a result there are times when both are visible from the ground at one point. Did you..? Not see it before?"
It's not all that scary, you know. Unless you're living in a
reality where the Moon isn't
natural...
"Neigh, We did not!"
Sarah jogs past her sister and tugs on Sunset's sleeve. Sunset looks down, Sarah points to us and Sunset follows the gesture with her eyes. She blinks, clicks her right forefinger against her right them and appears next to us in a cloud of glitter.
Ah, the little girl has the right idea. Get the other pony-girl to help.
"What's up with Luna? Or are you getting into public hobbling?"
"She saw the moon."
...And no, I am not going to link to
that.

Think a 'Bondage play' thing...
Sunset frowns, then shades her eyes as she looks up into the sky. "Huh."
"Sunset, did you ever have a problem with Earth's orbital mechanics?"
Does it matter to her Magical Research? No? Then why
would it?
"No, not really? Ah, Luna? You know it's meant to do that, right?"
I feel it as Luna regains control of herself, breathing in deeply and holding it before slowly breathing out. And in, and out.
Yes, the
desire to not be seen as
foolish in front of a peer is probably a
strong motivator.
"You may remove your hand. We are not some dumb beast who forgets what it saw the moment its sight is obscured."
I tighten my right arm slightly. I'd tilt my head to press into her hair if she weren't far too short for that to work in this shape. "So hobbling is off the menu?"
...And that can be taken
so many ways. But I think you can guess
exactly which way he wants it taken...

Or rather,
her taken.
"Public hobbling is most certainly 'off the menu' in whatever form We happen to occupy."
I open the fingers of my left hand, uncovering her eyes while still leaving my palm against the side of her head. Though her formerly pointing arm has flopped down to rest on mine her head is definitely pointed upwards to stare at the moon.
...That's not a no to
private hobbling, or other stuff like it...
"The moon is in the sky."
I nod. "It certainly is. Sunset, why didn't you have a problem with Earth's orbital mechanics?"
And a beautiful sight it can
be, depending on conditions. Though it's never so large as
video games would have you believe.
She shrugs. "I'd been on Earth for a while before I even noticed, and nothing particularly terrible had happened. I guess it just signified… Y'know…" She shrugs against, this time a little more awkwardly. "Celestia not watching over me."
"Has Twilight said anything about it?"
...Would she have even
bothered to look at the sky? I mean, she is
something of a shut-in at times.
"I don't think she's noticed. She's more interested in our technology and magic than anything else.."
Luna's breathing is almost completely back to normal now-.

Not
quite the heavy breathing
you want her to be doing, eh, Grayven?
"Luna, moon of my skies, perhaps-"
She tilts her head back so that she can look up at me. "That was terrible."
Hey, there are
worse ways he could have put that.

And lewder fanart generally
does give her a fine 'moon' indeed.
"-if you don't stare at it?"
"We will recover Ourself. It was simply a shock."
I mean, Grayven, haven't
you ever seen something you didn't expect before? I'm sure there's
something in this universe that could produce a reaction like that. What about that last visit from Him? Or where you too paralysed with
fear to be shocked?
"Had you really not seen it before today? You've been out and about on Earth several times."
"But for the most part We were inside, or the sky was overcast, or your moon not on display, or Our attention directed elsewhere. And then your filly Sarah tossed the ball high and there was a strange moon in the sky."
Ah... Yes, I suppose that could be a
surprise...

Wait, you were playing catch with the kids? How
sweet!
I nod. "A moon that didn't respond to your magic. I could see how that would be disconcerting, though I must say that I'm glad this happened while you are in human form and not as a pony."
She hesitates for a moment.
...Yes, a very good thing,
indeed. The DC Universe's orbital physics are robust, but not
that robust...
"You worry that in Our discomfiture We may have reached for it. We… Do not think that would have worked."
"Hopefully not, but if you threw out enough magic there might be other effects, even if the moon didn't start dancing to your tune. But hey! Good work on not falling over. It took Sunset a lot longer to get the hang of that."
I mean, how big is Wilson's
Moon,
actually? Because I doubt
it's 10k Kilometres around, nor weighs about 7.3x10
22 Kilograms (That's
22 zero's, people. That's a
lot.) Discord, you got some '
splainin' to do...
"Did not."
"You were making 'my hands are hooves' gestures when you kidnapped Twilight Sparkle."
It was quite
cute, you know.
"That's not the same as standing up!"
"That is sufficient." Luna raises her right hand. "You may consider us sufficiently distracted from the shoddy construction of the local universe."
Hey, now! The Source put a
lot of work into things. You know how hard it is to co-ordinate all these things whizzing about without colliding by
accident? ...No, making them collide on
purpose is something else
entirely.
"This system runs fine unless someone introduced a solar mass into the system. Yours falls apart if someone puts two ponies in a vine pod. If anything, you and Celestia should try and make your system work like this one."
"That, we are informed, in pony heresy."
And usually, the few times an object of a mass large enough to
actually mess with orbital physics, like
Mageddon or
Solaris, has entered the system, they've usually had space wedgies in place to prevent throwing things off-track.
Sunset shrugs. "Probably. But there's something about the idea of making Celestia unemployed that really appeals to me."
I give her a mild frown. "You are aware that she'd still be Princess Regnant, right? All it would mean is that she could have a lie in."
In fact, she'd probably
thank you for it. Do you know how much of a
pain it would be, having to rise before dawn every day for over a
thousand years?
Sunset avoids my gaze.
"Sunset."

...Oh, god. What did she
do?
"Look, Earth's full of strange ideas! I just got a few books on political theory and gave them to the Equestrian library service! I'm sure nopony is going to do anything crazy."
"Thou art trying to depose us?"
...Sunset has
no genre savvy or pattern recognition, does she? Does she not remember the Cutie Mark Lecture? Some Ponies are not entirely
stable.
"No. I'm trying to get other ponies to depose Celestia!" She shrugs. "You're fine. You can stay."
"And Sister was wondering if We would like Our own student. Between thyself and Twilight Sparkle, we are unsure that Equestia would survive."
Smart lady. Though I'm sure there are some colts and fillies out there who might benefit from your knowledge... Why, you could found a school of
oneiromancy! It's even got a pun in the 'neigh-me'!
"Just because we don't do what you want, that doesn't mean that we don't do amazing things. Just, y'know, don't spend years lying to us and make sure you actually teach us things. It's not complicated."
Ah…
Good advice. The sad fact of personal experience. I'm sure any students
you take in future will do
fine...
"Though… Maybe… Don't pick Starlight Glimmer. That pony… I think she might have problems."
Luna tilts her head back to look at me again.
"Neigh. Really?"
To quote Cable: "You've never needed a crystal ball to predict the obvious, have you?" But seriously, Starlight doesn't have
issues, so much as the entire
newsstand.