Celestia approaches Twilight about her research, and asks her a question.

Why.

Reading by Zealous Harmony

After deciding it best that Equestria lay claim over all of Earth and its inhabitants, Princess Celestia finds she now has a very special birthday present to offer to her sister.

Namely: Canada.

This story is a sequel to Luna's Birthday

Oh hey, now it's Celestia's birthday!
Luna wants to plan a party for her, to return the favor.

It's Luna's birthday, and it seems like everypony forgot...Again.

Gift for a friend's birthday. IT WON'T BE A PITY PARTY THIS YEAR!!

Celestia sends Twilight her last, greatest assignment. The lost masterpiece of Star Swirl the Bearded!

The spell that the greatest mage of all time couldn't figure out.

The spell given to her by the mare who thought releasing Discord was a good idea.

The spell that, upon closer inspection, seems about as stable as Rarity's emotional state and as safe as Rainbow Dash's usual workout.

... Maybe Twilight should double check with the princess first.

Winner of the Rage Reviews F*CK THIS PROMPT 6 contest. Prompt: "Equestria is getting a new Alicorn Princess."

Dark magic. It twists and corrupts the mind and soul. It makes its user power hungry, a hunger impossible to sate. And Twilight Sparkle fell prey to its corruption. Now it lands on the shoulders of Celestia to stop her once faithful student from destroying Equestria in her search for power. Only one problem.

Twilight is her foster daughter.

Edited by TheGreatEater

It started with a Nightmare: a corrupted monarch, a desperate sister, and a fragmented kingdom left in their wake. Saddled with the burden of protecting Equestria alone, Celestia chose to be strong enough not to. Instead, she found another way: three mortal ponies, the most magically gifted of their generation, to stand by her side as defenders of the realm.

For a thousand years, they've been everything Equestria needed them to be. Scholars, guardians, warriors, heroes—or, as Celestia prefers to call them, Angels. And if their inaugural achievements are any indication, her latest nominees for that illustrious order might just be the best ones yet.

Provided, of course, they don't blow up half the kingdom proving it.

An alternate universe retelling of the events of Friendship is Magic. A non-zero number of changelings were harmed in the making of said account.

Special thanks to CouchCrusader and totallynotabrony for their editing assistance.

Luna, still a bit unhappy at Celestia for banishing her to the moon for a thousand years, wants to have a small, tiny taste of vengeance. To be exact, she wants to send Celestia to the Sun.

So what is Luna going to do first?

Ask Celestia for permission, of course. Complications eventually occur.

Cover art by: drawcreator

Proofread by: The Daring Cookie

EDIT: Featured on 06/08/2015! Thank you all!

EDIT 2: Now with a dramatic reading by the awesome Wander MD! Link to reading

EDIT 3: Big thanks to Constantoine for providing a French translation! Link to French version

This story is a sequel to On The Dark Side of the Moon

While Twilight was trapped in her nightmares, the Cutie Mark Crusaders followed the Mane 6 to Canterlot and sneaked into Princess Celestia's chambers. Now they've got some explaining to do...

A follow-on story from On the Dark Side of the Moon, which may be found here:

This story is a sequel to Iron Hearts: Book 4 - Emerald Dawn

An MLP/Warhammer 40K crossover, part 5.

With their plan established and put into motion, the 38th Company begins the long and unwieldy task of planetary defense, fueling the arcane energies that may yet unsteady the Empyrean and spare their fleet from an enemy without number or mercy. The inhabitants of Centaur III and even the abandoned aggressors help where they are able, but as their foes grow in number and destruction spreads across the planet, the war for the Centaur system has become a bloody race against time.
All the while, the grim culture of the Chaos marauders continues to mingle with the enlightened benevolence of their equine allies. Tempers fray and allegiances blur. But the die has been cast: Equestria and the Company will survive together, or be snuffed out together.
And even should they succeed, what future awaits these unlikeliest of friends?
For there is no peace among the stars. Only an eternity of carnage and slaughter, and the laughter of thirsting gods.

ALL THE EXPLOSIONS. JUST, ALL OF THEM.

(Cover art by Ahrimatt)
(This series now has its own TVtropes page!)
(This series is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)