The Sciences and Exploration Directorate is the largest Earth and space science research organization in the world. Its scientists advance understanding of the Earth and its life-sustaining environment, the Sun, the solar system, and the wider universe beyond. The Directorate is part of Goddard Space Flight Center (GSFC) in Greenbelt, Maryland.

Researchers in the Sciences and Exploration Directorate (SED) work with engineers, computer programmers, technologists, and other team members to develop and operate the cutting-edge technology needed for space-based research. Instruments are also deployed on aircraft, balloons, and Earth's surface.

The Directorate's researchers share their findings and data with the scientific community. Education and Public Outreach programs explain the science to students and the general public.