Ontology of a Killer Robot

You can also find Killer Robot in Astrophobia, an anthology of space horror, with 12 other space horror stories 

Dearest, darkest fear of mine, I had begun to take you for granted

Unearthed 100 years ago, the android Micah has very little memory of his past and a tenuous grip on the present. Humanity has deemed him a useful tool and sent him into space with a small crew to investigate an unidentified object orbiting a nearby star. When the object turns out to be an alien spaceship, Micah and his crew encounter something none of them could have planned for, and something that none of them will ever recover from. 

Ontology of a Killer Robot is a sci fi horror short story. It includes descriptions and material that may disturb some readers. Please check the content warnings before reading if you are concerned.