Thought Experiment: Projecting an image onto the moon

It is theoretically possible to project an image—say a Pepsi logo, or a peace sign—onto the moon, with enough power.  The moon always shows the same side to the Earth, so you'd only need to illuminate the one side.
https://www.reddit.com/r/askscience/comments/2sej92/is_it_possible_to_project_an_image_onto_the_moon/
https://what-if.xkcd.com/13/

That's not the thought experiment though.

The thought experiment is this: what would the orientation of the image be to observers on Earth?  

If it was projected from the northern hemisphere (you'd need projectors all around the world as the Earth rotated on its axis), the image would be right side up as seen from the northern hemisphere.

And upside down as seen from the southern.

What about the middle latitudes?  It wouldn't suddenly shift from right side up to upside down.  What would it be in the middle, the horse latitudes?

It would be lying on its side. Somewhere here there is a thread, probably talking about Flat Earthers, where I posted 3 pictures of the full moon, demonstrating this.

Yeah, but which side?

The Earth has a polar tilt of 23.4º and the moon's is 1.5º ... but we can ignore all that.  Basically our north pole is always aligned with the moon's north pole. And the same face of the moon is always presented to the Earth because it is tidally locked with the Earth. So... people in the Southern Hemisphere see different craters at "the top" of the moon.


But what about on the equator?  Looking at the moon's unchanging face, we have "north pole" and "south pole" so we also have an "east" and a "west," right?  Since the same face of the moon is presented to the Earth at all times, the "eastern" population on the Earth would see the eastern edge of the moon as "up" and the westerners would see the moon's western edge as up.  But the Earth rotates.. so easterners become westerners during the course of the night (or vice versa, I can't be arsed to work it out.)

So at moonrise the moon is oriented with one side "up," and at moonset it is oriented with the other side "up."

Therefore, on the equator, and close to it (the horse latitudes), the moon must appear to pivot in the sky as it transits the sky. This is an effect I've never seen described anywhere before.


https://www.planetary.org/articles/can-the-moon-be-upside-down

Quote :

This phenomenon happens with other celestial objects as well, as long as they lie near Earth’s orbital plane (which the Moon lies near, though not on). Jupiter, for instance, can look upside down from the north pole compared to how it looks from the south pole. What’s more, its stripes look horizontal when seen near the horizon in both the northern and southern hemispheres of Earth, but from the equator a rising Jupiter’s stripes are vertical.

Therefore if Pepsi wanted to project its logo onto the moon, it'd make sense to make it spin every hour or so.

https://unintelligibledebate.forumotion.com/t3661-another-flat-earth-thing