Introduction to the Harvard Plate Stacks

Visit the Harvard Plate Stacks, the largest collection of glass plates of the night sky in the world. Learn about a century of women making revolutionary discoveries that have shaped the way we see the Universe.

The Plate Stacks curators pull and prepare materials the morning of the tour date, so we ask that you please give as much notice as possible if you are unable to attend. You can let us know by canceling your reservation here on the event page or emailing HarvardPlateStacks@CfA.Harvard.Edu.