Symphogear

With the coming of spring, Hibiki Tachibana and Miku Kohinata start their first year in high school school at the prestigious Lydian Music Academy. That their idol, the singer Tsubasa Kazanari, also attends Lydian is just an added bonus. Neither of them know that their lives are about to change forever. Neither of them know that the first, awakening beat is almost upon them. (Source: Rightstuf)

ASTRA LOST IN SPACE

Itʼs the first day of Planet Camp, and Aries Spring couldnʼt be more excited! She, along with eight other strangers, leave for Planet McPa for a weeklong excursion. Soon after they arrive, however, a mysterious orb appears and transports them into the depths of space, where they find an empty floating spaceship… (Source: Viz Media) Note: The first and last episode aired with a runtime of ~48 minutes as opposed to the standard 24 minute long episode.</i>

Knights of Sidonia

It's been a thousand years since the Gauna, a strange alien race with no known method of communication, destroyed the solar system. A portion of humanity managed to escape using enormous "seed ships" like the Sidonia, which have allowed them to maintain the population while drifting through space. Nagate Tanikaze is a young man who has been raised deep in the bowels of the ship. When he goes into training to pilot the huge robotic weapons known as Gardes, Nagate is entrusted with piloting the legendary unit known as Tsugumori. Nagate and his fellow pilots put their lives on the line against the Gauna, in the ultimate battle for the survival of humanity! (Source: AniDB)