If you're looking for manga similar to Crest of the Stars (Light Novel), you might like these titles.
Failed on the development of space shuttles to let human go to space, wars arise everywhere on earth for the already running out materials and resources. In all of those riots, a research team "Alchemist" continues developing a Subspace Creator System (Aurora Field). Hundred of years have past since then, Aurora walls are limiting the world people can go to and nobody knows what lies behind those walls. Research on "the other side" begins. The purpose is to examine the forgotten world behind the aurora field. Ailen is one of the research members, and he is the only one that came back from the mission, along with his already "affected" body... The madness of "Alchemist" started to break the world peace inside the walls, and to keep on living Ailen rose against them...
In the 22nd century, mankind has expanded into outer space. However, it was the Crushers who paved the way, performing jobs that ranged from terraforming to asteroid busting, warp lane plotting to transportation. These days, the Crushers still accept jobs of all kinds, so long as they're legal and ethical, and Crusher Joe's team is the best in the business! Joe, Alfin, Ricky, and Talos, along with the robot Dongo, take on jobs that require all the tools, tricks, and knowledge that the Crushers are known for. Of course, no job ever goes as expected. Whether it's rescuing prisoners trapped on an icy asteroid in a decaying orbit, or extracting a military officer charged with the safe keeping of a weapon of mass destruction from the clutches of insurrectionists, it's all part of the job to a Crusher, and that's before the mission goes sideways!
Over a century has passed since mankind sought an outlet in space for its burgeoning population. It is now Universal Century 0100. A new battle, one forged from the experiences of Hathaway Noa once embroiled in the Neo Zeon calamity caused by Char Aznable. The Minovsky Craft equipped Xi Gundam dances wildly through azure skies…
Charged with keeping the peace and investigating crime among the stars, the Worlds Welfare Work Association (WWWA) prides itself on a reputation of safety and regard for life and property. If only someone would tell that to Agents Kei and Yuri, codename "the Lovely Angels," but better known as the Dirty Pair. Part female James Bond and part walking disaster, this duo gets the job done, though there are no guarantees that a city or two won't get razed in the process. In this adventure, the Angels are called in to investigate the cataclysmic destruction of the Gravus Heavy Industry facility on the planet Dangool. What they find there hurls the pair into a danger-filled trek across the galaxy.