In an infinitely improbable set of events, Twilight Sparkle, Sunny Starscout, and other ponies of all generations meet at the Restaurant at the end of the Universe, make friends, and get thoroughly confused about the nature of the multiverse.

A quantum superposition of all pony generations with the Hitch Hikers Guide to the Galaxy. If you are not familiar with that, this will not make much sense.

If you are familiar with it, don’t expect it to make much more sense.

Izzy signs up her friends to do a panel debate about particle physics at the Bridlewood Festival of Philosophy. Sunny, Zipp, and Pipp get behind the idea. Hitch is not sure what he is doing here.

Every unicorn knows that pegasi can steal your luminescence, but as it hasn’t actually happened for so long, no pony can remember exactly how they did it. This is the story of how they pulled off the heist, many moons ago.

No star lives forever. Starlight Glimmer knows this. Daybreaker haunts her dreams with visions of the fate that awaits Princess Celestia after surrendering power to Twilight. Can Starlight use her knowledge of astrophysics to defeat her nightmare and prevent Equestria being consumed by a chasm of infinite darkness?

Written to mark the award of the Nobel Prize in Physics 2020 to Roger Penrose, Reinhard Genzel, and Andrea Ghez for their work on black holes.

Rainbow Dash and Twilight Sparkle visit the Cloudsdale Weather Factory seeking to understand the extreme cold weather across Equestria. Town weather ponies are tired of receiving complaints, and frustrated by the lack of answers from higher up. Rumours circulate that a mysterious monster—a polar vortex—has seized control of the North and threatens Equestria. They get passed from office to office, as each branch of the Weather Factory denies responsibility, as they pursue their quest to understand the mechanisms controlling the Equestrian climate.

A princess who loved a good tune,
Ventured to take up the bassoon.
But her playing all night
Did her sister incite
To banish her back to the moon.

But all the musicians unite
To save the princess of the night.
They fight to defend
Their bassoonist friend
And see this injustice put right.

Can you make a blue moon? Luna is sceptical, but Twilight Sparkle and Rainbow Dash decide to have a go.

On hearing the story of the Mirror Pool, Starlight Glimmer questions what happened to all the Pinkie clones sent back to the pool and the ethics of apparently eliminating sentient beings. Further investigation shows that the pool has the magical means to accommodate an unlimited number of orphaned souls. This is put to the test by an infinite set of Pinkie Pies.

Princess Cadance takes on the Crystal Empire patriarchy.

Written for FanOfMostEverything's Imposing Sovereigns contest in the Usurper¹ Cadance category.

¹Princesses Who Grabbed Power in a Man's World.

Princess of the Crystal Empire Checklist

- Defeat evil unicorn king [✔]
- Restore rule of law [✔]
- Get hair done [✔]
- Win chance to host Equestria Games [✔]
- Shut up those silly old colts with antiquated ideas about the role of a princess [ ]

This story is a sequel to The Art of Rainbow Engineering

Beyond the familiar colours of the rainbow, lies a wider spectrum of light. Rainbow Dash and Twilight Sparkle investigate the world as seen in infrared.

Can be read independently of The Art of Rainbow Engineering.