When Apollo 11 lands on the moon, Neil Armstrong utters his famous lines as his boots land in the lunar regolith, but when he turns around he finds something no one was expecting or had ever planned for.
There's an alien on the moon. And it's blue, four-legged, and staring at him.

Sequel here.

Earth has been conquered and for hundreds of years humanity has been under the hooves of giant ponies, its once great countries and empires reduced to mere vassals, required regularly to give their citizens to the ponies. Melissa, age 14, and Joshua, age 11, are taken from their parents to magical land called Equestria where humans are treated at best as little servants, or pets to be taken care of, at worst as disposable toys.

Pre-reader: SomeRandomMinion

This story is a sequel to The Eagle Has Landed

When President Nixon orders, you obey. And now that he wants Luna on the LM and heading home, how is Neil ever going to convince her to follow?
But it doesn't even get that far, as an innocent mistake endangers the mission.
And even as the mission is endangered, tensions are rising back on Earth. While the drama plays out in Mission Control, just what is going on behind the Iron Curtain?
No one knows, but it's certainly not conducive to Apollo 11's welfare.

Sequel here.

This story is a sequel to Princess Celestia: The Changeling Queen

This story is a direct sequel to Princess Celestia: The Changeling Queen. Reading that first is necessary to understand any part of this story.

Co-authored by vren55 and Zervziel

Alternia, sister to Chrysalis, ruled Equestria for a thousand years, disguised as Princess Celestia, while the alicorn slumbered in a healing sleep. Now revealed, Alternia prepares to become Equestria’s first changeling princess, and prove herself to the ponies she loves at the side of her co-rulers Luna and the newly-returned Celestia.

But even as the crown descends onto Alternia’s head, something is stirring in the depths of the Eastern Sea, something that will turn the surface world onto its head. Some power that could destroy Alternia, and all that she loves, before she can even regain the approval of her own ponies.

Will Alternia restore the trust her ponies once placed with her? Will she found a hive? Will she find love?

All that is certain is that Equestria, and the world, will never be the same again.

Now with a TV Tropes page.

Empress Tethys and the Kelpies Created by Zervziel

That Fantastic Cover art is by Plainoasis

Pre-read and edited by:
Blankscape,
FinalFan,
Courage Fire
Cosmic Cowboy

Well it's not actually a sequel. Here is a collection of short stories and histories detailing the life of Alternia, a changeling queen impersonating the life of Princess Celestia. These are the stories of the ruler under her mask.

Reading the main story: Princess Celestia: The Changeling Queen is a requirement if you don't want to be spoiled or confused. I will try to provide background information when I can.

For readers of the main story, there are basically no spoilers if you've read past chapter 8. Enjoy!

This story is a sequel to Princess Celestia The Changeling Queen: Stories Behind the Mask

At the Royal Wedding, Chrysalis and the Changelings were revealed to all of Equestria.

But another mask was torn away that day. A mask born for a thousand years. A mask created on one promise. A mask, that has become synonymous, fused, to its bearer.

A mask that when ripped off, causes Twilight, her friends and Luna to question everything they ever knew about the one pony, one very important pony.

At the Royal Wedding, the meaning of the phrase 'Princess Celestia' changes forever.

NOTE: Chrysalis is NOT Celestia!!! That'd be impossible to pull off.

Credits to: Plainoasis for the design of the cover art
Note 2: Original cover art here: https://angelea-phoenix.deviantart.com/art/Contest-entry-Changeling-Celestia-337023552

Pre-read/edited by Zervziel,
Blankscape,
FinalFan,
Courage Fire
Aurora Borealis

Side Stories to this can be found: here.

An audio-reading on youtube up to Chapter 21 is up by StraightToThePoint Studios. I'm aware there are others but this is the nearest complete one: [embed]https://youtu.be/X3eMW673CSY[/embed]

There are also 2 print versions of Princess Celestia:The Changeling Queen. Nonexistent Publications run and Ministry of Image's run.

Contribute to the TV Tropes Page (thanks to Babs_Seed72 for getting it up)

Friar Jacques de Charrette was tired. The Templars, his first Order, were gone, massacred by a treacherous King. His old wars are over, as the Kingdoms of Europe tear each other apart for land and power. Now a Hospitaller priest, and an old man, Friar Jacques expects nothing more than to live out the rest of his days in peace. But Providence has other plans in store for Jacques, and when a distant land has need of his aid, the dutiful warrior priest will answer the call.

He just would have preferred that someone warn him about the magical talking ponies.

Perhaps an odd foray into Human in Equestria writing, but I enjoy being unconventional. We often see modern men flung into the medieval world. What about a medieval man being flung into modern Equestria? A 14th Century Supplement in Celestia's Court is a companion volume, with a list of character descriptions (first chapter), canonical vignettes, and non-canon comedy chapters which will be added as time goes on. It is not required reading, but you may find chapters useful for context or amusing for the lack of context.

General disclaimer: this story is a work of fiction. 'My Little Pony' is the property of Hasbro and its affiliates. References to historical figures are made, but these are subject to creative license, and resemblance between original characters and those of other works are coincidental. I will make an effort to note when a historical reference is made in case people want to check the source material (and to cite my own sources), but these will be relatively few in number.

My Little Pony and its contents are the property of Hasbro, Inc. and its affiliates. Please support the official release.

Cover art is Heor Corbray by Nordheimer - it is the property of Nordheimer and I own nothing of it; thanks to lordelliot for finding the original, since I couldn't remember where I found it.