A year ago, on a Tuesday morning, a little boy named Ajax (aka Baby X) was born to the artist Marni Kotak in Brooklyn. Present were a midwife, a doula, and Kotak's husband—plus whomever happened to be at Bushwick's Microscope Gallery that day. "The Birth of Baby X" was, to much vitriol from the art community and beyond, not only a miracle of nature but a conceptual art performance. On Saturday, celebrate the first birthday of little Ajax at the gallery, which is currently showing "Raising Baby X: The First Year," Kotak's continued public documentation of her son's early years.