PLANETES
A manga where space travel has given way to space pollution and follows a group of astronauts who collect debris.
Makato Yukimura is now well known for his current series Vinland Saga but before that he was known for this minor hit series. I really enjoy this book for the hard science approach to space exploration. Yukimura put a lot of thought into the nuances that would go into the daily lives of these astronauts who are basically blue collar garbage men. The story may be based on space but the focus is on human characters and their connections to each other.
There is also a fantastic anime adaptation that really fleshes out the journey of main character Hachimaki from jaded debris collector to enlightened Jupiter explorer. However the story arc that follows Fee Carmichael and explores the politics of space travel hurting 3rd world countries isn’t in the anime. Both are great and I recommend you check them out! English edition available from Dark Horse.
~dakazu