Here's another piece for Neo Jap 2202! Getting really excited expanding the universe bit by bit.
Long story short: The Tojinbo Cannons (Located at the Tojinbo cliffs, Japan) were built to shoot the moon in half to decrease the rapid acceleration because it was going to hit earth. Bam.
Edit: Took off the long description of the story because there were heated debates in the comments and i do not want people to argue on this website. However, i definitely appreciate all the opinions given and i'll insert them into the story to fix the minor confusion. Also, as i mentioned, the story i have posted is already simplified and theres definitely alot of backstory behind the technology and how they work, so i felt that it was a little rude to assume that i lack common sense and i did not research properly, just for your information i dont go around post mindless stories without making sense in the universe. I'll just post up the story once i have more paintings to help visualize it!
If this universe has mastered space travel then why didn't Earth just build space based weapons? They'd be easier to position than waiting for the guns on the ground and the moon to align. But still I can't not say this piece is amazing. And yet those 20th century Chinooks.
Awesome guns. By the way most people assume that those guns shoot projectiles. Its the future? they could be giant Particle accelerators, laser cannons or even ray cannons. Anyway I do see however firing a weapon like that in earths atmosphere without the right kind containment field could destroy the ozone layer or worse.
However, why are you using Chinook helicopters? It does not fit the setting at all, I think you should design some kind of futuristic transport aircraft, looking at your other works, it should look incredible.