This story is a sequel to Back and There Again

Rarity has 'landed' safely in Equestria and she can finally see all her friends and family again. Aiden can finally meet all these good people he's heard so much about, and maybe try his hand at a bit of amateur diplomacy.

Unfortunately, they weren't the only ones to find a way to travel to Equus...

Events fifteen hundred years in the making will come to fruition as old enemies and allies vie to decide the fate of two worlds.

This story takes place before the events of Season 8.
Extra tags (since five character tags are the limit): Tempest Shadow, Changelings

This 'Earth' is so close, and yet so far from anything Twilight described on the other side of that mirror. How is Rarity going to get back to her home when she can't understand anyponybody? And didn't Twilight say she became human, and humans didn't use magic? Yet clearly some did... and that wasn't even counting all the devices that might as well have been magical, as far as Rarity was concerned.

Who knew one strange little gem could cause so many problems? They'd taken it from her after it'd brought her straight into a lab for study, but... If she ever found it again, she was definitely going to let Spike eat it. As soon as she got home. And by Celestia, she was going to get home!

...Will Rarity ever find her way home? Is the gem that brought her to Earth the key, and is there more to the factions maneuvering around her appearance?

To complicate matters, this is an Earth recovering from its first alien invasion (Rarity being technically the second, then). ...Or does that actually explain things? No, no it doesn't. But it will.

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To go with the Teen rating (or rather to explain it) there is light profanity and violence. I don't believe either are at a level where the warning tags are needed, but I'll mention it at least.
There may be some darker, more explicit moments in flashbacks, but I'll save those for Interludes.

This story takes place three weeks after Of Lilies and Chestnuts

Hearth's Warming, the ponykind celebration of unity is right around the corner. Every moment is a chance to spread winter cheer as Canterlot far and wide, and Chestnut, Fleur, and Fancy Pants intend to make their first holiday as a family the best it can be.

Easier said than done, especially when you are a known socialite with a recent party foul on your tab. Or a freshly made mother learning the ropes. Or a Prench for once trying to figure out how to approach this strictly Equestrian holiday.

Merry Hearth’s Warming, Fleur. Merry Hearth’s Warming.

This story is a sequel to Changeling Space Program

Twilight Sparkle's experimental interplanetary drive has malfunctioned, stranding Starlight Glimmer, Spitfire, Cherry Berry, a changeling and a dragon on a hostile planet in another universe. With limited food supplies, very little magic, no communications with home, and no way to leave the planet, they must survive until somepony rescues them.

Fortunately they crashed right next door to another creature with the exact same problem- a creature named Mark Watney.

They're going to science the buck out of everything- and do whatever it takes to survive Mars and get everybody home.

TVTropes page here! Thanks to GymQuirk for making it!

Commissioned art and fan works from the readers! Thanks, everybody!

This experiment in an updates-daily story was made possible by a generous grant from Canary in the Coal Mine and viewers like you.

(Sex tag for crude talk about sex, but no actual sex in the story.)