Status in Japan: 16 Volumes (Ongoing)
Genres: Comedy, Drama, Sci-Fi, Seinen, Slice of Life
Author: KOYAMA Chuuya | ????
One night in 2006, when they were young, the two brothers Mutta (born 1993) and Hibito (born 1996) saw what appeared to be a UFO heading for the moon. They decided that night to both become astronauts and travel out into space.
Dropped because it will be done by Crunchyroll.