If you're looking for anime similar to Tenkyuu no Kamui (Light Novel), you might like these titles.
The official music video for Subarashii Shinsekai by Bajune Tobeta & Bonjour Suzuki.
Leaving the earth after marriage, a woman is left behind in space when her husband suddenly dies of a cosmic disease. Her friends on the Earth head for space to save the woman who was once everyone's ideal lady.
In a technology-inclined future, a young prince of the Abriel family and his lover take a detour on their way home from an interplanetary trading mission to explore the remains of a dead star. The ancient spaceship they find within causes them to look back over the birth of their race, the Ahb, genetically engineered humans designed to travel the vastness of space...