When Sunset Shimmer went through the Crystal Mirror, she found herself sent lightyears away from Equestria to the planet of Earth during the year 2190. Surviving two wars of annihilation alongside the Human race, she would rise through the ranks of the Earth Federation Cosmo Navy and eventually be assigned as Captain to the Dreadnought-class Battleship Defender.

Sunset, now known as Sarah Solace, believed that her position as Captain of the Defender meant she would never have to deal with her past on Equestria, mostly due to the fact that Equestria was deemed off-limits until the natives had developed space travel.

That all changed when a mysterious foe attacked the Earth's two most important intergalactic allies, the Great Garmillas Empire and the planet of Iscandar, leaving the former badly weakened and completely destroying the latter.

Now facing down the memories of her life as a Pony and the uncertain future of her life as a Human, Captain Sunset Shimmer must find the middle ground between the two if she is going to succeed in her new mission of peacefully introducing Equestria to the galactic power that is the Earth Federation.

This is a crossover with the anime Space Battleship Yamato, taking place after the 2205 season.
July 30 Edit: I'm Featured?!
August 6 Edit: Taking down Chapter 2 for rewrite.

After being banished from Equestria for a crime she didn't commit, Twilight Sparkle is found by a group of Terran mercenaries who call themselves Talon Squadron. Left with no other options, Twilight joins the crew of the ship as they travel across the Koprulu sector aboard their Behemoth-class Battlecruiser known as the Eternal Phoenix.

Nine months after joining the crew of the Phoenix, the ship's captain, Commander Marcus Bradley, decides to give his second-in-command some time off on a planet of her choosing. After some time thinking it over, Ghost Lieutenant Twilight Andromeda Sparkle decides to go...home.

As she comes to terms with her past, Twilight recounts her adventures aboard the Eternal Phoenix to her friends and loved ones. How will her friends react to somebody who has been missing for nine whole months and has been in the fight for her life in more ways than one?

More importantly, will Twilight return to her life in Equestria, or will she decide to stay with her new family aboard the Phoenix?