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.

Sunset Shimmer is well respected, and has gained a lot of trust over the past year. So when Princess Twilight entrusted her with watching over her one and only niece, she was thrilled.

But one slip of the tongue around the toddler could break that trust.

Now with Reading by Mindlessgonzo

A reader's poll in Equestria's leading newspaper rates the Princesses by approval ratings.

OOC meta humor ensues as the four discuss the findings.

Pre-read by RT Stephens, MythrilMoth, and The Albinocorn.

This story is a sequel to X is a Changeling

Twilight discusses some new rules with the changelings that live in and feed from her library books.

Thanks to Noble Thought for prereading.

While exploring Canterlot Castle, Pinkie Pie and Rainbow Dash uncover a room filled with stone tablets connected to dials. Above each dial is the name of an alicorn they know.

These old things couldn't possibly control an alicorn's power, could they?

Only one way to find out.

It is the middle of the night when two bored princesses visit Twilight and her 'What If' machine. Join the three ponies and Spike as the view more:
Tales
of
Interest!

Princess Celestia writes a letter to her favorite student, highlighting the need for proper lab safety.

Apologies to Tired Old Man. Not connected in any way to his body of work-- I just went with the pun.

Twilight Sparkle is facing a crisis greater than Tirek, the Changelings, and King Sombra combined.

She's read every single book in existence.

So it is that she has nothing new to read.

She does not take it well.

Pre-read by The Albinocorn and MythrilMoth.

Review by Gear Tech the Living Robot

Dramatic reading by DRWolf
Reading by Wing T. Spears

"Thanks, Mom." Two simple words said by a simple guard.

Not so simple when those words are accidentally addressed to Princess Celestia.

This story is a sequel to Dear Princess Sunbutt

When Anon takes the liberty to inject his particular brand of humor into Twilight's friendship lessons, Celestia feels the need to respond, more often than not.

A somewhat unofficial sisterfic to 2Merr's Dear Princess Sunbutt

There may not be a response to every letter, and letters 1-11 were taken from my comments in said sister-story.

Please support 2Merr's story too if you like this one. This is written with encouragement of the original author.

(Note: Picture used without permission from Derpibooru. Upon request it will be promptly removed.)

EDIT: Apparently someone's done a reading of this and its sisterfic over on Youtube! Why does nopony tell me these things.