A portrait of trailblazing astronomer Henrietta Leavitt and an illustrated exploration of the power of attention in scientific observation, artistic creation, and the making of meaning.

Our galaxy, the Milky Way, has a diameter of about 100,000 light years—a figure we can calculate because of the work of Henrietta Leavitt (1868–1921), who spent decades studying glass plate photographs of the night sky. Visual artist and researcher Anna Von Mertens’s Attention Is Discovery is a fascinating portrait of this remarkable woman who laid the foundation for modern cosmology, as well as an exploration of the power of looking and its revelatory role at the center of scientific discovery. Ushering us into the scientific community of women who worked alongside Leavitt, now known as the Harvard Computers, Von Mertens describes the inventive methodologies Leavitt devised to negotiate the era’s emerging photographic technology.

Interspersed with Von Mertens’s meticulously researched and lyrically written essays are collaborations with art historian Jennifer L. Roberts, cosmologist Wendy Freedman, astrophysicist João Alves, and novelist Rebecca Dinerstein Knight. Alongside Leavitt’s process, evident in her astronomical logbooks and ink notations on the glass plates, Von Mertens includes details of the hand-stitched quilts and graphite drawings she made in response to Leavitt’s legacy. Photographs made by Jennifer L. Roberts using a macro lens amplify the material richness of these artworks and archives. This interweaving of text and image engages and rewards the reader’s own close attention. Highlighting ways that subtle, repeated actions build meaning—whether skilled, technical observation, the crafting of an object, or the mundane tasks that construct our exquisite lives—Von Mertens’s pairing of close looking with close reading creates a layered portrait of Henrietta Leavitt that acknowledges the significance of her discovery and the richness of its inheritance.