It is the year 2038, and the Earth is slowly being consumed by a space-borne monstrosity dubbed the Black Tide, which is using nanotechnology to remake the planet into something hideously alien.

Erin Olsen works for Project Harmonics, humanity's last-ditch effort to find a new world before the Tide can wipe them out. But when that world is found, and it turns out to be occupied, Erin will need to find the courage to face the unknown in order to save the inhabitants of both worlds.

(Many thanks to Easteu for the fantastic cover image for this story!)

Now with its own TV Tropes page

There is now a follow-up to this story: Sunflower - Side Projects
Sequel: Project Sunflower: Harmony

Jon Stewart needs to find a way to get more people to watch his show. To do this he welcomes a new series of guests from a far off land containing monsters, magic, and most importantly... ponies!
Join him on an adventure that has him matching wits with sentient mythical creatures ranging from god-like ponies to a fire breathing dragon! Each "Episode" marks a different MLP character getting a chance to travel to the human world for an interview on The Daily Show with Jon Stewart.

Please feel free to leave a suggestion for who Jon should interview next.
Disclaimer: For proper context it is highly recommended to reach each chapter in order as many interviews allude to past guests and events.
A special thanks to Zeta040, Cantankerous, and Zervziel for proofreading several stories listed below.

List of Characters who have already appeared:
- Chapter 1: Spike
- Chapter 2: Derpy
- Chapter 3: Applejack
- Chapter 4: Ms. Cheerilee
- Chapter 5: Octavia
- Chapter 6: Zecora
- Chapter 7: Mayor Mare
- Chapter 8: Twilight
- Chapter 9: Trixie
- Chapter 10: DJ Pon3
- Chapter 11: Rainbow Dash
- Chapter 12: Iron Will
- Chapter 13: Fancy Pants
- Chapter 14: Queen Chrysalis
- Chapter 15: Luna
- Chapter 16: A Changeling
- Chapter 17: Rarity
- Chapter 18: Lyra and Bon Bon
- Chapter 19: The Cutie Mark Crusaders
- Chapter 20: Discord
- Chapter 21: Fluttershy

A crossover story between My Little Marriage and Project: Sunflower. The story takes place after Chapter 30 of Project: Sunflower and before Chapter 22 of My Little Marriage. Contains minimal spoilers for both stories. Co-written by Merlos the Mad and Hoopy McGee.
~~
Two completely different worlds, two very different women:

Mary Morris is an ordinary wife and mother who woke up as a pony one strange day. Since then, she's been struggling to retain her sanity and deal with her new body, all while hoping to find a way to change back.

Erin Olsen is part of a project to investigate the newly discovered world of Equestria. Using advanced nanotechnology, she was turned into a pony in order to better fit in with the local population.

After a test of new world-traveling technology goes wrong, these two meet up and have sandwiches.
~~
This story is a collaboration between Hoopy McGee and Merlos the Mad.
Pre-reading, editing and general suggestions given by Ludicrous Lycan and Firebirdbtops
Original art by Conicer and modified (text and Santa hats added) by Merlos the Mad.

Hello, I'm Mary. I'm a mother of two, married to the most wonderful man I could hope for and live what I consider to be, the life I've always wanted. So... why oh why, in the wide, wide world of whys, did this happen to me?

This is my story, for better or for worse, about how things in my life became beyond unbearable.

Twilight and the other Elements of Harmony have saved the land of Equestria from Nightmare Moon, Discord, and the Changeling army, but now they face perhaps their biggest challenge yet. A challenge that lurks behind smiling faces and friendly eyes. A challenge that threatens to overtake the entirety of Equestria and enslave its inhabitants. But the ponies won’t face this threat alone. Help comes in the form of the most unlikely of companions: four teenagers, a hawk, and a blue centaur.

The reign of Morgoth in Arda is over. He has been defeated by the Host of Valinor and the Valar have bound him once more in the chain Angainor and cast him through Doors of Night into the Void. There he has drifted for many long ages, pondering his deeds and his defeats until Ilúvatar comes and offers him a chance at redemption. Softened by ages in the endless Void, Morgoth accepts this chance at freedom. He is given a new body and sent to a new world with the task of learning the values he has shunned for so long. In this new world, under the watchful eyes of Equestria's Valar, the Dark Lord will come to realize that there are yet things greater than the power of darkness.

Also yes, I understand that there's no "e" in Silmarillion, it's a pony pun. Sil-mare-illion. Geddit? GEDDIT?