Holy crap this took soooooooooo long to finish! Anyways this is pretty much a mlp and mission to mars crossover. It's based off of this scene here: [link] This is officially that picture's theme: [link] I hope you guys like it!
Gryphon Astronaut: [Becomes more friendly, if a bit smug] "Antimatter-catalyzed nuclear pulse engine, Your Highness. Pride of the Kingdom's scientific minds. What about you lot? Magi-tech rockets? Or something with less mysticism?"
Twilight Sparkle: "Well, that explains why you're earlier than us, despite setting off later. Oh, and no, nothing too fancy; we just used a thaumic reactor - with arcanium crystal power rods - to power the lasers which would ignite helium-3 pellets for inertial confinement fusion. Basically normal nuclear pulse, but with magic-tech. But we couldn't figure out how to magically synthesize sufficient amounts of antimatter, or a means to contain them, and since our conventional particle accelerator tech are behind yours..."
Rarity: "Where did you land, by the way, and how much earlier than us? We might have to start discussing territorial rights if we're to avoid a future interplanetary conflict..."
(Just then, as if on perfect comedic timing, a green shuttle lands on Mares, and out pops a Marvin the Martian-esque Changeling in a space suit carrying the flag of the Changeling Empire. He scuttles over to them, seemingly completely unaware of the other creatures' existence, and plants his flag into the planet's surface.)
Changeling Cosmonaut: (in Marvin the Martian voice) "I claim this planet in the name of the glorious Changeling Empire and it's even more glorious and glamorous Queen, Queen Chrysalis IV!"