Gêneros

Sato Takahiro was an ordinary office worker and hobbyist gamer until the day he woke up on a spaceship–one that strangely resembled a craft from a favorite space-shooter game. With a decked-out ship, a crew full of babes, and a fantastic universe to explore, he’s going to make the most of his good luck and create the life he’s always dreamed of!

(Source: Seven Seas Entertainment)

This manhwa deals with lives of a captain and her crew on a space vessel named "Diotima".

Diotima is set in 2092, far in the future. This manhwa is considered sci-fi for that. However, the manhwa's plot is "life". In other words, this is one of very few life manhwa. The episodes involve lives of captain Namer Joon and her crew onboard the space vessel, Diotima.
The plot goes a little further and tries to convey conflicts between Earthians and Moon settlers.

There are clearly some mysteries about Namer Joon, Diotima, and its creators.

On January 3rd, 2097, a collision with a celestial object basically destroyed human civilization. Seventy years later, human survivors are still living in space, unable to return to their home planet. Some humans, called "Divers" are able to project an avatar to the earth in order to salvage information from earth-based computer networks.

Suzuro is a 14-year-old freelance diver of incredible skill, but only a C-rank due to age restrictions. She works in a salvage ship with her pilot Ginga, who keeps the ship out of flying debris while she's connected to earth, and her assistant Shimugi. It's not only space debris colliding with the ship that could kill Suzuro while diving, there are also dangers waiting on earth that could kill her, just by interacting with her avatar. Suzuro must be certain that the cases she takes are worth the danger!

(Source: MU)

At Academia, a space colony intended to be the world university, a place that gather college students from all walk of life, a group of scientist finally succeed in inventing a time machine and here are the stories of how it leads to many people's life in this colony.

One of the first science-fiction manga, Kasei Tanken is an account of an expedition to Mars that finds a strange alien civilization there.

The story of Gundam F91 revolves around teenage space colonist Seabook Arno, his friend Cecily Fairchild, and the efforts of the Cross Bone Vanguard militia, led by Cecily's grandfather Meitzer Ronah, to establish an aristocracy known as "Cosmo Babylonia."

In keeping with Gundam tradition, the civilian Seabook is forced by circumstance to pilot the F91 Gundam, coincidentally designed in part by his estranged mother, Dr. Monica Arno.

(Source: Wikipedia)

Seina Yamada is unlucky... so unlucky that when he stumbles upon a recruiter looking for his senpai Tenchi he gets taken instead. Forced into the Galaxy Police, his luck begins to change. A natural to randomly jumping near pirates, he is assigned his own decoy to draw out pirates. His luck brings him into the lives of four women who have a habit of cancelling out his bad luck, turning it into good. Armed with this luck, they pilot the most powerful ships in the Tenchi Universe to defeat the Da Ruma pirates. Now the only uncertainty is whether the sexy Amane Kaunaq, a former model turned into a GP detective, sturdy Kiriko Masaki, who has known Seina for years, the mysterious Ryoko Balta, a former pirate named after the legendary one, or the child-like Neju Na Melmas, a powerful 2000 year-old priestess, will win Seina.

(Source: ANN, edited)

The Calamity War that engulfed all of Earth, and the Gundams deployed then which were said to have brought it to an end. 300 years later, some have been hidden, some abandoned...

Argie Mirage, a boy who carries the past of his family's death at the hands of a Gundam, meets Volco Warren, a boy who wishes to rebuild the Gundam his family left behind.

To destroy a Gundam. To rebuild a Gundam. In the midst of the two boys' intersecting fates, the Astaroth will awaken from its 300 year slumber

(Source: MU)

The World may be United but the time has come for Celestial Being to begin their interventions again.
For all of those who stand up in answer to the call, irreplaceable "Bonds" exist.

Bonds contains five short stories set throughout the second season, including Soma's transformation into Marie, Sumeragi's return to Celestial Being, and Marina creating her song for Kataron.

Extra Stage is the long sought "after" novel containing various stories chronologically set before, during and after the anime.

The human race extended its life field and greed to the vast reaches of space... In Space Era 0156, a war breaks out amidst all of the colonies in space. Earth begins to construct a new space battleship called Tiramisù in secret. Just as the war begins, one genius pilot steers the Tiramisù as a beacon of hope for humanity.

(Source: MU)

1. Elkid no Kyoboku
2. Kyouko no Yume (Kyouko's Dream)
3. Happy End
4. Chiisana Suisei
5. Chikyuu Saigo no Hi (Earth's Final Day)

1. Prologue: Convenience na Yoru
2. Splatter Recycling
3. Y-shi no Nichijou
4. Supeope Eigasha: Gyoushou-hen
5. Uchuu Shougun Manyuuki
6. Nonfiction Hour
7. Zombie Tanteichou
8. Toaru Gyoukai Monogatari
9. Choujin Project
10. Sponsor kara no Oshirase
11. Kokusai Kyuujo Kazoku
12. Jikan Fukei Patrol Nisshi
13. Dennou na Machikado
14. Uchuu Daizakka
15. SFX Shouhou: Houmon-hen
16. SFX Shouhou: Shuumatsu-hen
17. Time-bashigo Goshiyou no Chuui
18. Epilogue: Zakkaten Futatabi

Baraba is a corsair of the space that arrives to the Earth, along with her loyal grandpa Dagota (a 300 years old robot), to escape of the pursuers interested in seizing the reward hanging from her head. Their arrival to the planet, however, was not the most comfortable: the crossing of a dimensional barrier creates an imbalance that transforms her into an attractive and naked girl, while Dagota turns into a small monster with tentacles. As soon as she sets foot on the Earth, she is assaulted by Chuta Banba, an impeded high schooler desperately searching for his "first time", with whom Baraba begins a life dedicated to the most unrestrained hedonism. (wikipedia)

A tiny mountain village in a remote woodland region. Five primary school kids have come together in this idyllic spot in order to spend their summer holidays at a camp. At first the children enjoy carefree days amidst unspoiled nature far away from adult supervision. But their life changes dramatically when they come across what they believe to be a small dog, badly in need of help. The creature – known as Pochi – turns out not to be a dog at all but an alien on an important mission.

It seems there is a mysterious substance on earth that is coveted throughout the universe. Pochi had almost found it but was so badly injured during a fight that he had to give up his search. Thanks to the children's help, the alien survives – and decides to reward them generously. “Where would you most like to travel?” is the question Pochi puts to his rescuers. Their answer is prompt, if vague:
“As far as possible!” Pochi suggests they try the moon first of all, and so, the alien whisks away the kids to the satellite next door. This marks the beginning of an absolutely amazing adventure.

During the course of their travels they discover that the substance coveted throughout the universe is in fact also integral to Japanese cuisine – and it just so happens that one of the kids has some of this mysterious substance in his pocket.