After Ditzy has a cordial meeting with her dear friend Spitfire, a friend who believes her memory to be damaged, their worlds are changed when their friendship is no longer secret. Ditzy begins to remember things about who she used to be, while another, more sinister force has never forgotten who she was...
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Preview image is © TheParagon and is used with permission.
(http://theparagon.deviantart.com/).

The Great Cycle is coming to a close and the tenuous bonds of harmony are beginning to break. I have set the wheels of change in motion and conflict is inevitable, even anticipated... This is the time for the Equians to prove themselves, to prove that they deserve their continued existence in the unending universe, we shall see if they can withstand the coming storm and rise to greater heights.

(Oh my! A story based on an alicorn! how original... before you downvote, or say that there's no need for the main character to be an alicorn... it's essential to the plot... read if you may... criticize if you need to... but i intend to write this story to the very end, i know it's an outdated idea, i know that it may seem generic at first, but it will get less generic (I hope) the further it goes in, also, Tags will be added as they become apparent or as needed.)

Twilight Sparkle never meant to do anything wrong. But then again, all magical mistakes are caused by ponies who have no idea what happened. That's why they're called mistakes. The only difference with Twilight's mistake is that it accidentally sort of turned her into Princess Celestia. And now she doesn't know how to change back.

Why does Equestria need a guided missile cruiser?
What made the US Navy sell it so cheaply?
How could Princess Celestia think this was a good idea?
Learn the true story behind one of the most controversial - and secret - arms deals in history.

Nopony knew that the two rulers of Equestria would pass on so soon. The two sisters sacrificed their lives to save their kingdom. Who inherited the throne? None other than Queen Cadence and Prince Shining Armor. Who inherits the throne after them? None other than their children. Follow along as the new generation takes wing, new friendships are born, and new conflicts arise.

Inspired by fanart from artist Banshee42ru. Set a few years after Season 2 (pending future edits), the story follows the relationship of Spike and Apple Bloom. Their young love takes a serious turn when she finds herself pregnant with a half-dragon, half-pony foal. How will their family and friends react, and what will this halfbreed child mean for them and Equestrian society as a whole?

NOTE: Updates and new chapters tend to take a rather long time, but unless I actually put it as 'On Hiatus' I actually am working on it. It's not abandoned, I just have a really slow writing process.
Also, a while back someone sent this to Equestria Daily without asking me. I appreciate the thought, but they work on a strike system and I really don't want to be locked out.

The star system Omega Centauri was just another oddity on a map to scientists in the not too distant future. However when they found the star was orbiting an earth-sized, earth-like planet instead of a black hole as its motion had suggested, a mission was scrambled to investigate this most unusual of celestial behaviors.

Hamstrung by politics, and nearly crippled before it began, the 'Lone Ranger' mission was reduced to just one crew member and left to his own devices.

These are the logs of Arrow 18 and its lone commander. This information is classified TOP SECRET by the Global Space Agency.

Do NOT tell the princess.

My name is James Clark, and I am a Private Military Contractor. No, not Mercenary. Yes, there is a difference, but that's beside the point.

Ok, where was I? Ah yes, I was just entering my office in Downtown Houston one afternoon to hear a job offer. When I got there, I found a beautiful, robe-wearing woman waiting for me. Now, in this day and age, most people would find that strange. I didn't for two reasons.

1) In this line of work, you run into a few crazies. If I had a dollar for every nut-job I turned away, I could buy a small European country.

2) It was Halloween. Hell, I was on my way to a party dressed in a replica suit of Veteran Ranger Armor from Fallout: New Vegas, complete with gas mask and real riot gear I borrowed from a friend on the SWAT team. I was gonna win the costume contest for sure!

I'm getting off topic, aren't I? Anyways, this weirdo offered me a job without going into much detail. No location, no objective, not even a dollar amount The only thing I got out of her was the promise that I would be saving thousands, if not millions of lives.

Every instinct told me to turn the job down, and yet I still accepted it. Maybe the idea of playing hero again had its appeal.

God, I had no idea what I was getting myself into.

The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

TV Tropes
https://tvtropes.org/pmwiki/pmwiki.php/FanFic/Article2

Three brave individuals- a unicorn, a pegasus, and an earth pony- undertake the most perilous journey anypony has ever been asked to perform to save the most cherished thing in Equestria.