This thesis deals with contemporary African American science fiction. It focuses on three texts by Derrick Bell, Octavia Butler, and Walter Mosley and examines the ways in which they convert the dominantly white SF genre. By addressing non-traditional issues such as racism, racial boundaries, and the politics of species, these alien encounter stories demonstrate that it is not the intruders from outer space who are the real threat to U.S. society but their own (white) U.S. Government. Thesis. (Series: MasteRResearch - Vol. 2)