The 22nd William T. Pecora Memorial Remote Sensing Symposium (Pecora 22) will willbe hosted by NASA and the USGS, with an overarching theme of Opening the Aperture to Innovation: Expanding Our Collective Understanding of a Changing Earth. This theme embraces both the innovations and discoveries that resulted from 50 years of Landsat Earth observations, and also current and future innovations in science and technology that are contributing to our ability to improve our understanding and better manage the Earth’s environment.