No space aliens can be found in it, but the new book UFO (PQ Blackwell, $135) does feature stellar fashion and celebrity photos from Scottish photographer Albert Watson’s 40-year career. Short for Unified Fashion Objectives, the retrospective monograph showcases 364 images, including portraits (Grace Jones, David Bowie, Kate Moss) and editorials (Arena, The Face, Italian Vogue), as well as personal work. Here, a very small sampling…