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.

The wheel of time turns, as destiny and history clash together.

Fifty years into the future, Sunset Shimmer is Princess Twilight Sparkle's most faithful student. She is smart and eager, but doesn't always think things through. Her life had been perfect, right up to the End of the World.

With a ruined future, Sunset travels into the past to alter the course of history. With only her mentor's cryptic word to go on, Sunset and the Elements of Harmony must solve the riddle of the Dark Regalia and stop the mysterious Vesper Radiance from rising to power. But the further Sunset goes, the more she feels like she's been through it all before.

Is destiny set in stone, or can Sunset shape her own future? Only time will tell.

Featured on Equestria Daily 6/16/13
Gratefully edited by JustAnotherTimeLord, Icarus_Gizmo, Cerulean Voice and Bad_Seed_72

The Sunset of Tropes page!

When Carrot Top discovers that her coltfriend is cheating on her, her first reaction is to kick him to next Monday. The fact that at the moment her coltfriend is attending Blueblood's birthday party doesn't seem to convince her otherwise.

The good news, her friends are all there to get her out of trouble.

The bad news, her friends are all a bunch of sociopaths.

Proofreading by:

• The-baas
• Rainshine
• Selbi (Chapter 2 onwards)
• Neko Majin C

This story is a sequel to How Not To Use Your Royal Prerogative

  In an Equestria where the Sonic Rainboom never happened, Sunset Shimmer is the prized pupil of the Princess of the Sun. As Sunset struggles to make up for her past misdeeds and come to terms with the pony she wants to be, Celestia sends her to find the classic work The Application of Unified Harmony Magic from the Royal Canterlot Archives.
  Right after lunch, some meddling by her friends and meeting somepony with firsthoof experience of the Sunset she used to be.

Featured on Equestria Daily on August 18, 2016!
Appeared in the FimFiction Featured Box!

Cast: Sunset Shimmer, Moon Dancer, Minuette, Twilight Sparkle & Princess Celestia

Stories set in the Wavelengths Timeline in chronological order:

Origins Arc
The Alchemy of Chemistry
Bards of the Badlands
Grading on a Bell Curve
Habits of the Equestrian Phoenix
How Not To Use Your Royal Prerogative

Applications Arc
The Application of Unified Harmony Magics
Princess Celestia: A Brief History
The Cloudsdale Report

Dreamers Arc
Tactics of Snowbound Unicorns
A Study in Chaos Theory
Teahouses of Saddle Arabia
As the Raven Flies

Cover Credits
Cover Design by Amber Spark
Sunset Shimmer Vector by TigerBeetle
Pony SciTwi Vector by Osipush
Canterlot Bookshelves Vector by FavoriteArtMan
Sunset Shimmer Cutie Mark by MillennialDan

Beta Reader Credits
Ebon Quill - Worldbuilding Writer on The Manehattan Project
Quantum State - Technical Director of The Manehattan Project
The Albinocorn - Master of Sunset Shimmer Stories

Strongly Recommended Stories:
The Brightest and the Best by Pineta - The events in this story are considered to be completely canon to this timeline and explain Twilight's entrance exam to Celestia's School for Gifted Unicorns. I cannot recommend this story enough.
MLP Annual 2013 - "The Fall of Sunset Shimmer" - As above, the 8-page short comic in the beginning of the Annual is also considered to be canon, though with some major variations.

Version 3.0 Edit: Extensive grammatical and mechanics changes. Adjustment to timeline of Sunset's second mirror experience.

Fearing the consequences of her actions in the bipedal world, Sunset Shimmer returns to Equestria and moves to Ponyville where Twilight Sparkle can keep an eye on her. Sunset Shimmer, bored and beaten, casts about for something to distract her, but soon the feelings growing inside her for Ponyville's princess can no longer be ignored. Nervously, with a little help and encouragement, Sunset begins to open her long-frozen heart to Twilight Sparkle, but when the shadows of Sunset's past threaten to destroy any chance of her happiness in the present, Sunset and Twilight may have to risk everything they have and defy cosmic forces older than Equestria in order to seize their fragile chance at happiness.

Cover art by Wadusher0

Many thanks to pre-reader The Albinocorn, but don't blame him for any errors you might find in the first chapter, because he only became pre-reader after I posted chapter 1

They say that Equestria was a paradise. I don’t know if that’s true, but I wanna believe it. There sure ain’t one in this piece of the ‘Verse. Maybe we coulda built one if it weren’t for the damned Confederation. Those bastards wanted every planet in the system under their hoof and wouldn’t take no for an answer. The outer planets fought ’em, and we lost.

It’s tough to get by these days with Confederation lawkeepers looking for an excuse to crack down, bandits and thieves crawling everywhere the Confederation’s not, and the Jesters prowling around the edges of civilized space. Honest work’s hard to come by, and honest folk are twice as rare. Still, a mare has to make a livin’ somehow. So that’s what I do.

Find a crew. Find a job. Keep flying.
– Rainbow Dash, Captain of Tranquility

There are no new cadets being trained, the big annual Wonderbolts party extravaganza isn't until this weekend, and Spitfire will only be away from the Academy for three days.

Fleetfoot is definitely ready for this responsibility.

Except she's not.

Somepony is totally getting fired.

Spanish Translation from Spaniard Kiwi!
Featured on Equestria Daily!
Apparently hit the feature box for like twenty minutes!
JohnPerry confirms: is a fic!
You Might Like This--May 2015 Spotlight!
Featured in EFNW's Fanfic Spotlight #34!

This story is a sequel to Sunsplit

"...okay, ow. My head hurts. I wonder how long I've been--oh, who are you?"

After finding Discord hiding out in his closet, Twilight Sparkle soon learns the most horrible of truths about herself and the world surrounding her.

And then she learns another truth.

And another. And another. And...

Diplomacy, foreign relations, cultural exchange, all important duties that Twilight needs to learn as a princess. Fortunately, this foray in to the unknown is made much easier when she meets a lovely foreign pony from the French Equestrian Kingdom who's willing to be friends with her.

Now, if only they could actually understand each other.

Series of oneshots set in a RariTwi AU based on the prompt, "Rarity and Twilight are princesses from different countries, smitten with each other despite being unable to communicate".

Beautiful cover art by foldawaywings !