You were born on this day in 1868, in Lancaster, Massachuetts. You figured out how to use Cepheids with the ultimate result of understanding the size and, in the end, the fundemental nature of the Cosmos. The Big Bang theory is based in part on your contributions to Astronomy.
As a woman working in Astronomy in the early days of that science, nothing important will ever be named after you. Sure, there’s an asteroid named after you, but for chrissakes, PZ Myers has an asteroid named after him. Sure, there’s a crater on the Moon named after you, but I filled out one of those forms and got a crater on (the other side of) the Moon named after my daugther. Big whoop.
But there is a book about you that’s pretty good: Miss Leavitt’s Stars: The Untold Story of the Woman Who Discovered How to Measure the Universe (Great Discoveries)
Also, your work is nicely contextualized in Big Bang: The Origin of the Universe (P.S.) by Singh. Highly recommended.