Hyperspectral imagery has provided dramatic new insight into the geology and atmosphere of other planets. However, understanding these images can be quite challenging since scientists can only visualize a small number of bands. The Hyperspectral Image Interactive Holistic Analysis Toolkit (HiiHAT) is an intelligent assistant to help analysts efficiently browse, summarize, and search hyperspectral images. The software consists of a plugin to the IDL/ENVI environment.