[Complete! With TVTropes apparently!]
Also, apparently, an animated trailer.

In a world of brass and steam, Twilight Sparkle had thought she had made a life-changing discovery with the invention of the telescope. For better or worse, she was correct.

Now her discovery has not only changed her life, but the lives of those she seeks out in her desperate attempt to contact the only other creature as lonely as Twilight herself.

It all would have been much simpler, but it had to be the one Twilight could only call The Mare on the Moon.

Decidedly not within walking distance, then.

[Featured on EQD before story was meant to be submitted. 4/03/2015]

[Editing team: Southpaw, Wolfvenom, Maskedferret, SwanSong and BluePaladin42, without whom this story would be a fraction of its current state.]
[Special thanks to Novel-Idea for the updated cover]

"I can face the whole world with one claw, as long as your hoof is holding the other." - A Dragon in Love -

Luna and Spike romantic feelgood thriller with a dash of political intrigue.

'...a great and glorious orchestration in romance...' - Wing, Non-Pareil Fiction
'You made me cry tears of sorrow and joy, cheer like a madman and truly be happy for the two characters I never even liked in the show.' - Eversquee
'This is the most I've laughed, cried, exclaimed and cheered in a long long time.' - Melancholy
'I usually don't like romances, but this one is awesome!' - Aguion12
'When the characters are happy, I'm happy. When they're not, I'm not. It's all so perfectly done..' - Drgnwolf

Synopsis

Greed strengthens a dragon. But what of the opposite? Spike feels a little bit of himself broken away with each passing day as Rarity flaunts her newfound love with another stallion. But that's the least of his troubles. A formal gala for which he is the guest of honour quickly approaches. With the relationship between the Council of Friendship and the nobles of Equestria at stake, he is certain this gala could only end in a big political disaster. Enter Princess Luna, cunningly disguised as the sweet elegant mare by his side, intent on turning him from a laughingstock into the star of the show. But jealousy and misfortune swiftly strike, leaving Luna permanently stuck in her disguise. Together they must maintain their cover until they somehow figure out how to fix everything. As the days pass, as the 'one more day's turn into a week, they slowly come to a startling realization - Perhaps there is nothing to fix?

Proudly brought to you by our hardworking editor dream team, Not A Hat and Brad The Brony

Story Art 1 - The Moon Rises!
Story Art 2 - Moonlight Sonata(Disguised Luna)'s cutie mark
Story Art 3 - The World Has Been Doubled!
Story Art 4 - Moon Walk
Story Art 5 - Raising the Moon

New Cover Art by this guy who's into candy-coloured little equines. Apparently calls himself Pen Mightier or something.

Old Cover art by the talented Yakovlev-Vad! Please be sure to give him a 'watch' on his DA as thanks!

'We’re taken on an adventure, and if I dare say, we aren’t just told the damn story. We’re allowed to experience it. Spike has a moment, and I feel warmth. Luna tosses off the royal baggage, and I feel the feels. This is a great and glorious orchestration in romance...' - Wing

'Bravo! Bravo! ...I'm not into Romance stories because I don't really like them at all but this story here...This is my favorite!' - PlatinumPony

'I don't think I can accurately express how much I truly enjoy this story, right now. When the characters are happy, I'm happy. When they're not, I'm not. It's all so perfectly done that it's like I'm living the story instead of merely just reading it off a page. This already wins first place for most adorable story I have ever read...' - Drgnwolf

'Oh my Gods the feels! I smiled, laughed, got very angry and very sad all in one chapter! Please oh please complete this awesome tale soon! The suspense is killing me!' - Wiriamuzu

'I always wait until a story is finished before thinking about adding it to my favorites. Always. I have never added a story to my favorites before it's finished. This story is the one exception.' - Jomp

'Yeah. You just made a grown-ass man make a 'squee' sound.' - HoneyBadgerr

'Of all the stories I've read I can safely say that this is the one that best combines the written word with sound and music, there are plenty that have tried the same and not even come close to what you achive here.' - Lore

'This is the greatest story I have ever read. This is also now my favorite story. If you don't upload another chapter soon I will wait patiently until you do. I will climb mountains for this story. I will go to Disney Channel.com without my parents permission for this story. If i don't finish this story, i will write down in my will for someone to finish it for me. You, ascended pony writer from a land where the pigeons poop gold, are the greatest person in history.' - Blooming Cherries

'I am loving this story so far. The storytelling, the drama... oh it is so magnificent. A well crafted story by a well deserving author. I tip my hat to you sir. I can see some form of "Beauty and the Beast" in here. But what also surprises me is the way it is written. I've even had some moments of portraying Spike as Holden Caulfield from the famous story, The Catcher in the Rye. Just the way he speaks sort of reminds me of the way that poor man was, and the bits of Spike not wanting to detach from Rarity felt similar in the regards of Holden not wanting to grow up. Again, Pen Mightier, you have done a great job. Keep up the great work!' - XxEpsilonxX

'My cheeks hurt because I been smiling all the way down the chapter. Princess Luna really is the best pony.' - Allen Vth

Anypony would have laughed if you'd told them that Discord was flirting with Twilight Sparkle a few weeks ago. She'd never give him a chance, right?
Well, once his spectacularly obvious advances on her commence, Equestria is shocked; she isn't out right rejecting him. In fact, she may even be interested.
The HORROR!

WARNING: The dark tag is for a reason. Ye be warned.
[Other] tag is to accommodate additional characters.

EDIT: Featured 10/22/14! Thank you so much! I didn't expect this to happen at all.

The wonderful people who edit and proofread my story ^^

Twilight Sparkle has too much magic, and it will take her decades to learn to control it. Her spectacular loss of control during her entrance exam only proves that fact. She is a danger to herself and others.

After Sunset Shimmer’s disappearance, Princess Celestia needs a new student to bear The Element of Magic to defeat Nightmare Moon. With all of Equestria at stake, Twilight Sparkle…is not the pony she needs.

Princess Celestia seals Twilight Sparkle’s magic with the distant promise of one day teaching her.

But there are two diarchs of Equestria. Amidst a lucid dream, an offer is made.

“Hello, Twilight. Would you like to be my student?”

Cover art provided by Lafiir.

King Sombra, the tyrant of Crystal Empire is back, only to be imprisoned by princesses and put through reformation with Twilight Sparkle as his teacher. Can somepony with heart as black as night be reformed? Twilight believes so. Sombra in other hoof isn't so sure but something in that mare makes him try.

This is going to be one of my longest stories this far. Marked Teen for sexual innuendo and slightly gory-ish scenes. Nothing too bad though. Also this will not be a story that deserves a dark marking.

For now I'd like to thank Alun Aleriksson, pony of change, Microshazm and Sidetrack for helping with the grammar and overall writing in general. Thank you so much.

Cover art by lorekhearts.

[Featured on EqD] A changeling worker, stranded and far away from her home, is forced to make a difficult choice. Risk her life, or serve the enemy.

This is 100% Approved by Twilight's Library.

This story is a sequel to Celestia's Twilight

We all know the story. One thousand years ago Princess Celestia was forced to banish Nightmare Moon to the moon to save all of Equestria, but what if Luna had been hiding something from her sister, scared of how she would react? When Luna had no other choice, she cried out for Celestia and Celestia came. For one thousand years, Luna wondered what happened when Celestia left; now she's finding out...

But is it already too late, or will Luna be able to take the role she had so long dreamed of? The dream of being a mother?

editor Don't Look At My Name Bro! and RK I am lost without you!

A thousand years ago, Princess Celestia banished her sister to the moon, that much we know. What wasn’t known, and what Celestia kept secret was that before her banishment, Luna had given birth to a foal. Now a thousand years later, as Nightmare returns to Equestria to bring about Eternal Night.

Twilight Sparkle, protege of Princess Celestia, struggles against the tyranny of this ancient foe. But how will she be able to save herself and her friends when the truth of this ancient legend crashes down upon her? Twilight will have to confront herself...and her heritage.

Polaris501

Niamh, an introverted student of veterinary science, finds herself transported to a strange world inhabited by ponies. Of course, that means becoming one herself. Now she must prove to the other ponies that she is not the 'Nightmare Moon' they think she is, and earn their trust, while they must earn hers. Especially this 'Princess Luna' character.

But two questions stand out above the rest as being truly important: How did she get there, and why?

Featured 19/03/14 Didn't expect that.

Amazing cover art was done by the extremely talented MrFulp.

Life is full of surprises. That is a known fact. However, you always expect some kind of minor surprise, like your train arriving a little too late, or your ice-cream having vanilla taste rather than strawberry. But sometimes, life will give you surprises you could never predict. For Fluttershy, it was three little foals. But not her own foals, or even orphans. Three little foals that used to be her and her friends' most fearsome and dreaded foes.

Sombra, Chrysalis and Nightmare Moon.

Will Fluttershy's nerves survive this onslaught of misadventures? Will she keep the three villains hidden? Will she even become friends with them? Why do I sound like a narrator to a bad criminal drama? Don't think or try to answer those questions, just go ahead and read!

Edited by: MessoriaAQ, Cerulean Voice, Gidget_TheGear, Twilight Fashion

Cover art by amazing Missangest!

Cover art got featured on Drawfriend in EqD!
The story itself got proudly rejected by EqD!