Twilight Sparkle is interrupted from a midnight study session by the arrival of three confused magic students.

A short Harry Potter/My Little Pony crossover. Can the universe handle Twilight Sparkle and Hermione Granger in the same room?

EDIT: Rewritten per 2015-04-27

OHMYGOSH OHMYGOSH OHMYGOSH by Scribble Worthswords

Everypony has one 'Longest Night', a night that just never seems to end, whether they want it to end or not. For Celestia, her Longest Night began on the first night she had to raise her sister's moon.

Heartbroken and filled with despair that she may never see her sister again, Celestia makes a wish upon a falling star to see her sister one more time. Little did she realise that the stars listen.

A one-shot story of two sisters, and one Faithful Student.

Side-quel: Myths and Birthrights

Partially inspired by Ponyphonics amazing song 'Lullaby for a Princess'.
Cover art used with permission by InuHoshi-to-DarkPen.
Special thanks to Honey Mead and Iroh for helping iron out some details.

On a dark night filled with even darker magics, an insane cult attempts to give Nightmare Moon a body and life of her own, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia, something unexpected is created.

Now, a little black alicorn filly named Nyx finds herself living under the care of Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a doppelganger with a soul and mind of her own? Can Twilight Sparkle protect Nyx from those who refuse to see past her dragon eyes and black coat?

Or, will Nyx be forced to inherit the sins that may not even be hers and become the greatest evil Equestria has ever known?

On his way to Seoul, Captain Benjamin Franklin "Hawkeye" Pierce comes across an unconscious, hurt Twilight Sparkle, and takes her back to the 4077 to take care of her. There, she meets the odd creatures known as humans, and learns about their chaotic activities, about both their good and bad sides. The 4077th's crew learns about her world as well.

And during it all, they heal each other's hearts, even if they don't mean to.

Twilight's latest letter to the princess goes... astray.

Princess Celestia tires of constantly being surrounded by decorum, deference, and formality, and decides to take a day off from being Princess. But visiting Ponyville incognito is harder than she expects. Will she be able to fit in and make friends without blowing her cover?

Friendship, the Final Frontier.
When a Starfleet ship discovers that the Orion Syndicate is enslaving ponies, her commander decides to do a good deed and return the rainbow-maned pegasus home to Equestria. Things don't go smoothly for the crew of the USS Judges, but what they find may be one of their biggest discoveries ever.
A Friendship Is Magic/Star Trek Online crossover.

A slightly more realistic take on the "Human in Equestria" story concept.

... For a given value of "realistic."

Okay, it's barely realistic but it is a hell of a lot of fun...

Now with an image graciously provided by Page Turner, and an audiobook version narrated by multifanficaday and if you prefer it in German, FrankyDoodle has got you covered!

And a TVTropes Page!

Last Featured: 11/26/2019! Thank you so much!

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.

Spike only wants things to stay the same. Time, however, has other ideas. He's going to need a lot of help... An everypony story.

(Cover image by Rannva)