The NASA Earth science flight program is a dynamic undertaking consisting of a large fleet of operating satellites, an array of satellite and instrument projects, a robust airborne science program which advances the use of satellite data, and a massive data archiving and distribution system. NASA’s fleet of 22 operating missions provides a wide range of scientific measurements obtained from dedicated Earth science satellites and the ISS. Projects in development are include both directed missions and competitively selected Principal Investigator-led missions. The Earth science flight program benefits from investments by the Earth Science Technology Office (ESTO) to develop and demonstrate cutting-edge technologies that can be applied to future NASA Earth science measurements/missions. In addition, the NASA Earth science future portfolio will be evolving in response to the 2017 National Academies of Science Earth Science Decadal Survey. Support for this Town Hall is provided by Northrop Grumman.