Can you recommend some angel science fiction books?

Sure. 'City of Bones' by Cassandra Clare has elements of angel - related fiction. It's about a girl who discovers she has a connection to a world of angels and demons. Another one is 'Angelfall' by Susan Ee, which is set in a post - apocalyptic world where angels have fallen to Earth and are causing chaos.

One great 'guardian angel fiction book' is 'The City of Ember' where the main characters seem to have a kind of guardian - like force guiding them in their journey through a post - apocalyptic world. Another is 'A Wrinkle in Time' which has elements of other - worldly beings that could be seen as guardian - like in their protection of the young protagonists.

Well, 'Fallen' by Lauren Kate is a well - known angel fiction. It tells the story of a girl who is drawn to a mysterious boy who turns out to be an angel. The story is filled with mystery and romance as it unfolds in a boarding school setting. Also, 'Angelfall' by Susan Ee is a post - apocalyptic angel story where the angels have turned against humanity, and it's a really exciting read.

The 'Fallen' series by Lauren Kate is also great. It tells the story of a girl and her relationship with a fallen angel, full of mystery and romance. These books explore the complex relationships between angels and demons in an interesting way.

I'm not aware of many mainstream books that directly combine all three elements. However, some works of queer fiction might have elements that could be associated with angels in a more symbolic way. For instance, in some books that explore themes of redemption and transformation in the context of LGBTQ+ characters' lives, the concept of an angelic presence could be inferred.

Often, they blend religious or spiritual concepts of angels with futuristic settings. For example, angels might have advanced technological powers.

One book could be 'The Angel in the Garage' by an unknown author. It might be a fictional take on the concept of an angel being associated with a garage in some mysterious or magical way.

Another great one could be 'Midnight Robber' by Nalo Hopkinson. It offers a unique perspective with its blend of Caribbean culture and science fiction elements, creating a rich and imaginative world within the realm of 1981 science fiction works.

Well, from that list, 'Forever Peace' by Joe Haldeman is also quite remarkable. It combines military science fiction elements with deep thoughts on war, peace, and human nature. The story follows a soldier's journey through a future world filled with high - tech warfare and political intrigue. It makes you think about the consequences of our actions and the pursuit of peace in different ways.

One of the notable science fiction books from 1993 could be 'Doomsday Book' by Connie Willis. It combines time travel and historical elements in an engaging way.